EXHIBIT 99.3
                                CONTRACT OF SALE


                                     Between

                            CITIBANK, N.A., AS SELLER

                                       and

             DAI-ICHI LIFE INVESTMENT PROPERTIES, INC., AS PURCHASER



                            As of November 22, 2000


                                TABLE OF CONTENTS

                                                                            Page

1.   DEFINITIONS............................................................  2

2.   PURCHASE AND SALE...................................................... 11

3.   THE CITIBANK LEASE..................................................... 13

4.   STATUS OF TITLE; TITLE INSURANCE AND SURVEY COSTS...................... 13

5.   BROKERS AND ADVISORS................................................... 15

6.   CUSTOMARY CLOSING ADJUSTMENTS.......................................... 16

7.   EFFECT OF CERTAIN LEASE EVENTS......................................... 20

8.   OPERATION OF THE UNIT PRIOR TO CLOSING................................. 22

9.   RECORDING CHARGES, TRANSFER AND CONVEYANCE TAXES; WITHHOLDING;
     INTERNAL REVENUE SERVICE REPORTING REQUIREMENTS........................ 29

10.  CLOSING DATE DELIVERIES................................................ 31

11.  REPRESENTATIONS, WARRANTIES AND ACKNOWLEDGMENTS........................ 36

12.  CONDITIONS PRECEDENT TO CLOSING........................................ 43

13.  CLOSING DATE........................................................... 44

14.  VIOLATIONS............................................................. 44

15.  NOTICES................................................................ 45

16.  CASUALTY............................................................... 47

17.  CONDEMNATION........................................................... 52

18.  REMEDIES............................................................... 52

                                       -i-


19.  INDEMNITIES............................................................ 53

20.  ASSIGNMENT AND RECORDING............................................... 54

21.  PROPERTY INFORMATION AND CONFIDENTIALITY............................... 54

22.  ERISA.................................................................. 56

23.  SURVIVAL............................................................... 56

24.  MISCELLANEOUS PROVISIONS............................................... 56


                                      -ii-



                                    EXHIBITS

EXHIBIT               DESCRIPTION

A                     Legal Description of Land

B                     Legal Description of Citigroup Center - Office Unit Two

C                     Approved New Leases

C-1                   Potential Purchase Price Adjustment

D                     Form of Lighting Easement

E                     Form of Limited Common Area License Agreement

F                     Intentionally Omitted

G                     Intentionally Omitted

H                     Intentionally Omitted

I                     Form of Unit One Citibank Lease Amendment

J                     Form of Exchange Agreement

K                     Form of Citibank Lease

L                     Form of Unit Deed

M                     Form of Bill of Sale

N                     Form of FIRPTA Affidavit

O                     Form of Resignation from Board of Managers

P                     Form of Notice to Tenants

Q                     Form of Citibank SNDA

R                     Form of Assignment and Assumption of Leases




S                     Form of Assignment and Assumption of Construction
                      Contracts

T                     Form of Assignment and Assumption of Contracts

U                     Form of Assignment and Assumption of Church Lease

V                     Form of Confidentiality Agreement

W                     Standard Tenant Estoppel



                                    SCHEDULES

SCHEDULE              DESCRIPTION

1(a)                  Budgeted Repairs

1(b)                  Intentionally Omitted

1(c)                  Pro Forma NOI

1(d)                  Budget

4(a)                  Permitted Encumbrances

6(f)(i)               Allocation of Leasing Commissions

6(f)(ii)              Allocation of Tenant Allowances

6(f)(iii)             Allocation of Budgeted Repairs

8A(a)(6)              Seller's Right to Collect Receivables

10(a)(iii)            Assigned Litigation Interests

11(a)(iii)            Existing Litigation

11(a)(iv)             Condemnation

11(a)(ix)             Protest Proceedings

11(a)(x)(1)           Existing Leases

11(a)(x)(2)           Contracts

11(a)(xi)             Rent Roll, Past Due Rents, Security Deposits and Tenant
                      Defense Notices

11(a)(xiv)            Prepaid Rent

11(a)(xv)             Insurance Policies




11(a)(xviii)(1)       Notices of Non-Compliance

11(a)(xviii)(2)       Zoning Agreements



         THIS AGREEMENT (this "Agreement") made as of the 22nd day of November,
2000 between CITIBANK, N.A., a national banking association having an office at
599 Lexington Avenue, New York, New York 10022 ("Seller"), and DAI-ICHI LIFE
INVESTMENT PROPERTIES, INC., a Delaware corporation having an office at 399 Park
Avenue, 24th Floor, New York, New York 10022 ("DLIP").

                              W I T N E S S E T H:

         WHEREAS, the premises described in Exhibit A attached hereto, together
with the improvements erected thereon (collectively, the "Citigroup Center") are
subject to the condominium form of ownership pursuant to the terms of that
certain Amended and Restated Declaration of Condominium dated as of August 22,
2000 (the "Condominium Declaration");

         WHEREAS, Seller, DLIP and St. Peter's Lutheran Church of Manhattan (the
"Church") are the owners of the fee title interest in and to the condominium
units in the Citigroup Center created pursuant to the Condominium Declaration;

         WHEREAS, Seller is the fee owner of the premises described in Exhibit B
attached hereto, together with the improvements erected thereon and referred to
as "Citigroup Center Office Unit Two" in the Condominium Declaration (the
"Unit");

         WHEREAS, it is the intent of Seller to sell the Unit in exchange for
DLIP's ownership interests in Unit 1 in The 399 Park Avenue Condominium in a
manner that will qualify for deferred tax treatment under Section 1031 of the
Code, and it is the intent of DLIP to facilitate such exchange by assigning its
rights under this Agreement to a third party purchaser (it being understood,
however, that no such assignment shall relieve DLIP of its obligations under
this Agreement) and to accomplish through the Exchange Intermediary a
transaction whereby (a) the Unit will be transferred to such third party
purchaser for cash, (b) Unit 1 in The 399 Park Avenue Condominium will be
transferred to Seller, and (c) cash from the third party purchaser will be paid
to DLIP;

         WHEREAS, Purchaser has agreed to lease to Seller, and Seller has agreed
to hire from Purchaser, a portion of the Unit (the "Citibank Leased Premises")
in the manner hereinafter set forth; and

         WHEREAS, the parties hereto are desirous of setting forth their
respective rights and obligations with respect to the transactions contemplated
by this Agreement;

         NOW, THEREFORE, in consideration of the foregoing recitals, which are
incorporated into the operative provisions of this Agreement by this reference,
and the mutual


covenants and agreements contained herein, and other good and valuable
consideration, the receipt and adequacy of which are hereby conclusively
acknowledged, it is agreed as follows:

         1.  DEFINITIONS. As used herein, the following terms shall have the
following meanings:

     ADJUSTED NOI: The term "Adjusted NOI" shall mean the Pro Forma NOI as
     adjusted to take into account any Leasing Event.

     AGREEMENT: The term "Agreement" is defined in the Preamble to this
     Agreement.

     APPORTIONMENT DATE: The term "Apportionment Date" as used in this Agreement
     shall mean Eleven Fifty-Nine P.M. (11:59 P.M.) on the day immediately
     preceding the Closing Date.

     APPROVED NEW LEASE: The term "Approved New Lease" shall mean any new Lease
     (i) the terms of which have been approved by Seller as of the date hereof,
     but which Lease has not been executed and delivered as of the date hereof
     and (ii) identified on Exhibit C attached hereto. Exhibit C also contains a
     description of the anticipated major economic terms of each Approved New
     Lease.

     ASSIGNMENT AND ASSUMPTION AGREEMENTS: The term "Assignment and Assumption
     Agreements" shall mean, collectively, the four (4) assignment and
     assumption agreements identified in clauses (vi) - (ix) of Section 10(c) of
     this Agreement.

     BILL OF SALE: The term "Bill of Sale" is defined in Section 10(a) of this
     Agreement.

     BOARD OF MANAGERS: The term "Board of Managers" shall mean the Board of
     Managers of The Citigroup Center Condominium.

     BREAKPOINT DATE: The term "Breakpoint Date" is defined in Section 16(b) of
     this Agreement.

     BUDGETED REPAIRS: The term "Budgeted Repairs" shall mean those Capital
     Expenditures consisting of the repairs, replacements, and improvements to
     the Unit described in Schedule 1(a) attached hereto, either currently in
     progress or that are anticipated to be incurred by Seller over the normal
     course of operation of the Unit during the Interim Period.

     CAPITAL EXPENDITURES: The term "Capital Expenditures" shall mean (i) the
     costs and expenses incurred by Seller relating to base building capital
     improvements for the Unit

                                      -2-


     generally but excluding costs and expenses for Tenant Allowances in
     connection with the leasing of space in the Unit for a particular tenant
     and (ii) Seller's share of the costs and expenses incurred by the Board of
     Managers relating to capital improvements for the Common Elements.

     CASUALTY REPAIR PERIOD COMMENCEMENT DATE: The term "Casualty Repair Period
     Commencement Date" is defined in Section 16(b) of this Agreement.

     CHURCH: The term "Church" is defined in the second WHEREAS clause of this
     Agreement.

     CHURCH LEASE: The term "Church Lease" shall mean that certain Agreement of
     Lease dated as of July 1, 1977, as amended by Amendment of Lease dated as
     of March 23, 1981 between the Church, as landlord, and Seller, as tenant,
     with respect to a portion of the Church Unit (as such term is defined in
     the Condominium Declaration), as the same may hereafter be amended.

     CITIBANK LEASE: The term "Citibank Lease" is defined in Section 3 of this
     Agreement.

     CITIBANK LEASED PREMISES: The term "Citibank Leased Premises" is defined in
     the fifth WHEREAS clause of this Agreement.

     CITIBANK SNDA: The term "Citibank SNDA" is defined in Section 10(c) of this
     Agreement.

     CITIGROUP CENTER: The term "Citigroup Center" is defined in the first
     WHEREAS clause of this Agreement.

     CITY TRANSFER TAX: The term "City Transfer Tax" is defined in Section
     9(b)(i) of this Agreement.

     CLOSING: The term "Closing" shall mean the consummation of the sale and
     purchase described in this Agreement.

     CLOSING DATE: The term "Closing Date" shall mean the date upon which the
     Closing shall occur, which date shall in no event or under any circumstance
     be later than April 1, 2002, TIME BEING OF THE ESSENCE with respect to such
     April 1, 2002 Closing Date.

     CODE: The term "Code" is defined in Section 14(b) of this Agreement.

                                      -3-


     COMMON ELEMENTS: The term "Common Elements" shall have the meaning given to
     such term in the Condominium Declaration, which term shall be deemed to
     include, for all purposes of this Agreement, Seller's right, title and
     interest in and to any "Limited Common Elements" appurtenant to or used in
     connection with the Unit.

     CONDOMINIUM: The term "Condominium" shall mean the property submitted to
     condominium ownership pursuant to the Condominium Declaration.

     CONDOMINIUM DECLARATION: The term "Condominium Declaration" is defined in
     the first WHEREAS clause of this Agreement.

     CONFIDENTIAL PARTY: The term "Confidential Party" is defined in Section
     21(a) of this Agreement.

     CONTRACTS: The term "Contracts" shall mean the service, supply, management,
     leasing, franchise, maintenance, security and all other agreements or
     contracts entered into in connection with the operation, leasing,
     maintenance and repair of the Unit including, without limitation, (i) the
     construction contracts and other agreements with respect to work that is
     normally capitalized instead of expensed in accordance with generally
     accepted accounting principles consistently applied, which is being
     performed or to be performed at the Unit (collectively, the "Construction
     Contracts"), (ii) any leases of any of the personal property included in
     this transaction, (iii) any contracts pertaining to displays of artwork or
     similar matters, (iv) any contracts with the City of New York or any other
     municipal, governmental or quasi-governmental entity or agency relating to
     the Unit or its use, operation, leasing, maintenance or repair and (v) an
     undivided interest attributable to Seller's interest in all contracts
     entered into by the Board of Managers.

     CONTRACTUAL RIGHT LEASE EVENT: The term "Contractual Right Lease Event"
     shall mean a Lease Event that occurs as the result of a tenant under an
     Existing Lease exercising a contractual right thereunder (including
     entering into any sublease, assignment, expansion, renewal or any other
     matter with respect to which the tenant may seek the landlord's consent and
     which is contemplated by such Existing Lease).

     CUSTOMARY ADJUSTMENT: The term "Customary Adjustment" shall mean the
     adjustment of income and expenses with respect to the Unit as set forth in
     Section 6 of this Agreement and calculated as of the Apportionment Date.

     DEFAULTING PARTY: The term "Defaulting Party" is defined in Section 18 of
     this Agreement.

     DLIP: The term "DLIP" is defined in the Preamble to this Agreement.

                                      -4-


     ESTIMATED REPAIR PERIOD: The term "Estimated Repair Period" is defined in
     Section 16(b) of this Agreement.

     EXCHANGE AGREEMENT: The term "Exchange Agreement" is defined in Section
     2(c) of this Agreement.

     EXCHANGE INTERMEDIARY: The term "Exchange Intermediary" is defined in
     Section 2(c) of this Agreement.

     EXCHANGE OPTION: The term "Exchange Option" is defined in Section 2(c) of
     this Agreement.

     EXCLUDED DECISIONS: The term "Excluded Decisions" shall mean, with respect
     to the Unit during the Interim Period, all non-discretionary, day-to-day
     administrative decisions made in the ordinary course of business or,
     subject to the provisions of Section 8(a)(i) of this Agreement, decisions
     to take such actions (i) as may be reasonably necessary to comply with the
     terms of any Lease (including, without limitation, decisions relating to
     the granting or withholding of a consent right with respect to a material
     matter under any Lease as to which the landlord is required to be
     "reasonable" or is required "not to unreasonably withhold" consent), (ii)
     as may be necessary to protect or preserve life, health and safety of
     persons and/or property, (iii) as may be reasonably necessary to insulate
     Seller from material liability to any third party, and (iv) as may be
     reasonably necessary for Seller to comply with its obligations under the
     Condominium Declaration.

     EXISTING LEASES: The term "Existing Leases" shall mean those Leases set
     forth on Schedule 11(a)(x)(1) attached hereto.

     FIRPTA AFFIDAVIT: The term "FIRPTA Affidavit" is defined in Section 10(a)
     of this Agreement.

     ICIP: The term "ICIP" is defined in Section 8(a)(vi) of this Agreement.

     INTERIM PERIOD: The term "Interim Period" shall mean the period commencing
     upon the execution and delivery of this Agreement and ending on the day
     immediately preceding the Closing Date.

     INVOLUNTARY LEASE EVENT: The term "Involuntary Lease Event" shall mean a
     Lease Event that occurs as the result of a unilateral action or inaction on
     the part of a tenant under an Existing Lease in violation of such Existing
     Lease (e.g., bankruptcy of tenant, vacation of space prior to scheduled
     lease expiration or non-payment of rent).

                                      -5-


     JLL: The term "JLL" is defined in Section 5(a) of this Agreement.

     LAWS: The term "Laws" is defined in Section 14(a) of this Agreement.

     LEASE EVENT: The term "Lease Event" shall mean the modification, amendment
     termination, cancellation, surrender or assignment of an Existing Lease (or
     the sublease of the premises demised thereunder or any portion thereof)
     during the Interim Period or the occurrence of an event during the Interim
     Period which has the effect of modifying, terminating, cancelling or
     resulting in the surrender of, an Existing Lease.

     LEASES: The term "Leases" shall mean all space leases, licenses, occupancy
     or other agreements to which Seller is a party granting any rights of use,
     occupancy or possession in or to the Unit or any portion thereof, and shall
     include, without limitation, all guaranties of such agreements, as all of
     the same may have been amended.

     LEASING COMMISSIONS: The term "Leasing Commissions" shall mean the cost of
     all leasing commissions, referral fees and legal fees incurred by the
     landlord of the Unit in connection with the leasing of space in the Unit.

     LIGHTING EASEMENT: The term "Lighting Easement" shall mean that certain
     Grant of Easement between the Other Board of Managers, as grantor, and the
     Board of Managers, as grantee, in the form of Exhibit D attached hereto.

     LIMITED COMMON AREA LICENSE AGREEMENT: The term "Limited Common Area
     License Agreement" shall mean that certain Limited Common Elements License
     Agreement between the Board of Managers, Purchaser and Seller in the form
     of Exhibit E attached hereto.

     MAJOR CASUALTY: The term "Major Casualty" is defined in Section 16 of this
     Agreement.

     MAJOR CONDEMNATION: The term "Major Condemnation" is defined in Section 17
     of this Agreement.

     MASTER LICENSE AGREEMENT: The term "Master License Agreement" shall mean
     that certain License Agreement dated as of the date hereof between the
     Board of Managers and Seller.

     MASTER SIDE LETTER: The term "Master Side Letter" shall mean that certain
     letter agreement dated as of the date hereof between DLIP and Seller.

                                      -6-


     NEGATIVE NOI ADJUSTMENT: The term "Negative NOI Adjustment" is defined in
     Section 7 of this Agreement.

     NET REFUND: The term "Net Refund" is defined in Section 8A(b)(2) of this
     Agreement.

     NON-DEFAULTING PARTY: The term "Non-Defaulting Party" is defined in Section
     18 of this Agreement.

     NYCDF: The term "NYCDF" is defined in Section 8(a)(vi) of this Agreement.

     OTHER AGREEMENT: The term "Other Agreement" shall mean that certain
     Contract of Sale of even date herewith, between Seller and DLIP pursuant to
     which DLIP has agreed to sell, and Seller has agreed to purchase, Unit 1 in
     The 399 Park Avenue Condominium.

     OTHER BOARD OF MANAGERS: The term "Other Board of Managers" shall mean the
     Board of Managers of The 399 Park Avenue Condominium.

     PERMITTED ENCUMBRANCES: The term "Permitted Encumbrances" is defined in
     Section 4(a) of this Agreement.

     POSITIVE NOI ADJUSTMENT: The term "Positive NOI Adjustment" is defined in
     Section 7 of this Agreement.

     PRO FORMA NOI : The term "Pro Forma NOI" shall mean the pro forma net
     operating income of the Unit determined by calculating (a) the aggregate
     annual rents and other payments payable under the Existing Leases and the
     Approved New Leases, if any, as set forth on Schedule 1(c) attached hereto,
     and by subtracting therefrom (b) the pro forma operating expenses for the
     Interim Period as set forth in the budget attached hereto as Schedule 1(d).

     PROPERTY INFORMATION: The term "Property Information" is defined in Section
     21(d) of this Agreement.

     PROTEST PROCEEDINGS: The term "Protest Proceedings" is defined in Section
     8A(b)(1) of this Agreement.

     PURCHASE PRICE: The term "Purchase Price" shall, subject to the immediately
     following sentence, mean One Hundred Eighty-Five Million and 00/100 Dollars
     ($185,000,000.00), as the same may be adjusted in accordance with Customary
     Adjustments set forth in Section 6 of this Agreement, the adjustments set
     forth in Section 7 of this Agreement and the adjustments set forth in
     Section 8A of this

                                      -7-


     Agreement. If the Approved New Lease described on Exhibit C attached hereto
     is not executed and delivered on or prior to the Closing Date, the Purchase
     Price shall be reduced in accordance with Exhibit C-1 attached hereto.

     PURCHASER: The term "Purchaser" as used in this Agreement shall be deemed
     to mean DLIP and any immediate assignee or designee of DLIP permitted under
     Section 20(a) of this Agreement, it being expressly understood and agreed
     that DLIP shall at all times remain liable for the obligations of Purchaser
     under this Agreement and shall at no time be released therefrom
     irrespective of any such assignment or designation permitted under Section
     20(a) of this Agreement.

     PURCHASER CONSENT ACTION: The term "Purchaser Consent Action" shall mean,
     with respect to the Unit during the Interim Period, all decisions (other
     than Excluded Decisions) relating to Existing Leases, all decisions
     relating to new Leases, all decisions relating to Lease amendments, Lease
     renewals, Lease surrender agreements, Contracts, Capital Expenditures,
     capital repairs, casualties, condemnation proceedings and settlement of
     Protest Proceedings or any other litigation with respect to the Unit, and
     all decisions by or on behalf of Seller relating to the use, operation,
     leasing, maintenance and repair of the Common Elements.

     PURCHASER INDEMNIFIED PARTIES: The term "Purchaser Indemnified Parties"
     shall mean Purchaser and any disclosed or undisclosed officer, director,
     employee, trustee, shareholder, partner, principal, parent, subsidiary or
     other direct or indirect affiliate of Purchaser, or any officer, director,
     employee, trustee, shareholder, partner or principal of any such
     shareholder, partner, principal, parent, subsidiary or other direct or
     indirect affiliate or any advisor or consultant of any of the foregoing.

     RECEIVABLES: The term "Receivables" shall mean all rental payments, expense
     reimbursements and other monetary obligations of any kind due and owing or
     to become due and owing to Seller for the period prior to and including the
     Apportionment Date under (i) the Leases and (ii) all space leases,
     licenses, occupancy or other agreements granting any rights of use,
     occupancy or possession in or to the Common Elements or any portion
     thereof, and shall include, without limitation, all guaranties of such
     agreements, as all of the same may have been amended.

     REPRESENTATIVES: The term "Representatives" shall mean, with respect to any
     person or entity, such person's or entity's agents or representatives,
     including, without limitation, its directors, officers, employees,
     affiliates, partners, agents, contractors, engineers, attorneys,
     accountants, consultants, brokers or financial advisors.

     SELLER: The term "Seller" is defined in the Preamble to this Agreement.

                                      -8-


     SELLER INDEMNIFIED PARTIES: The term "Seller Indemnified Parties" shall
     mean Seller and any disclosed or undisclosed officer, director, employee,
     trustee, shareholder, partner, principal, parent, subsidiary or other
     direct or indirect affiliate of Seller, or any officer, director, employee,
     trustee, shareholder, partner or principal of any such shareholder,
     partner, principal, parent, subsidiary or other direct or indirect
     affiliate or any advisor or consultant of any of the foregoing.

     SELLER'S KNOWLEDGE: The term "Seller's Knowledge" or words of similar
     import shall be deemed to mean, and shall be limited to, the actual (as
     distinguished from implied or constructive) knowledge of Brian McDonald,
     Thomas Zizzi and Leslie Heifetz without such persons having any obligation
     to make an independent inquiry or investigation.

     SSB: The term "SSB" is defined in Section 5(a) of this Agreement.

     STANDARD TENANT ESTOPPEL: The term "Standard Tenant Estoppel" is defined in
     Section 23(j) of this Agreement.

     STATE TRANSFER TAX: The term "State Transfer Tax" is defined in Section
     9(b)(i) of this Agreement.

     SYSTEMS AGREEMENT: The term "Systems Agreement" shall mean that certain
     Systems Agreement dated as of the date hereof among Seller, Purchaser, the
     Board of Managers and the Other Board of Managers.

     TENANT ALLOWANCES: The term "Tenant Allowances" shall mean all tenant
     improvement expenses (including all hard and soft construction costs,
     whether payable to the contractor or to the tenant), tenant allowances,
     moving expenses and other out-of-pocket costs incurred by the landlord of
     the Unit in connection with the leasing of space in the Unit.

     THE 399 PARK AVENUE CONDOMINIUM: The term "The 399 Park Avenue Condominium"
     shall mean the condominium created pursuant to the terms of The 399 Park
     Avenue Condominium Declaration.

     THE 399 PARK AVENUE CONDOMINIUM DECLARATION: The term "The 399 Park Avenue
     Condominium Declaration" shall mean that certain Second Amended and
     Restated Declaration of Condominium dated as of January 1, 1995
     Establishing a Plan for Condominium Ownership of the Premises known as 399
     Park Avenue.

     TITLE EXCEPTIONS: The term "Title Exceptions" shall mean any lien,
     encumbrance, security interest, charge, reservation, lease, tenancy,
     easement, right-of-way, encroachment, restrictive covenant, condition or
     limitation affecting the Unit.

                                      -9-


     TITLE INSURER: The term "Title Insurer" shall mean any reputable title
     insurer (or title insurers in the case of co-insurance) licensed to do
     business by the State of New York, as specified by Purchaser, acting in its
     reasonable discretion, by written notice to Seller given not less than
     forty-five (45) days prior to the Closing, which notice to Seller shall
     contain the written agreement of any such title insurer(s) to execute and
     deliver the Exchange Agreement substantially in the form of Exhibit J
     attached hereto.

     TRANSFER TAX FORMS: The term "Transfer Tax Forms" is defined in Section
     10(c) of this Agreement.

     UNANTICIPATED CAPITAL EXPENDITURES: The term "Unanticipated Capital
     Expenditures" shall mean those Capital Expenditures incurred with respect
     to the Unit during the Interim Period that are (i) not the cost of
     performing Budgeted Repairs, (ii) unknown and unanticipated on the date
     hereof, and (iii) not covered by insurance required to be maintained by
     Seller in accordance with the terms of this Agreement.

     UNANTICIPATED CAPITAL IMPROVEMENTS: The term "Unanticipated Capital
     Improvements" shall mean those capital improvements the cost of which is
     properly categorized as an Unanticipated Capital Expenditure.

     UNIT: The term "Unit" is defined in the third WHEREAS clause of this
     Agreement.

     UNIT DEED: The term "Unit Deed" is defined in Section 10(a) of this
     Agreement.

     UNIT ONE CITIBANK LEASE: The term "Unit One Citibank Lease" shall mean that
     certain Office Space Lease dated August 19, 1994 between Dai-ichi Life
     (U.S.A.) Inc. (predecessor-in-interest to Purchaser), as landlord, and
     Seller, as tenant, with respect to floors 23-25 in Citigroup Center Office
     Unit One (as such term is defined in the Condominium Declaration), as
     amended by the Unit One Citibank Lease Amendment.

     UNIT ONE CITIBANK LEASE AMENDMENT: The term "Unit One Citibank Lease
     Amendment" shall mean that certain First Lease Amendment in the form of
     Exhibit I attached hereto.

     VOLUNTARY LEASE EVENT: The term "Voluntary Lease Event" shall mean a Lease
     Event which is not a sublease, assignment, termination, exercise of an
     expansion or renewal option or other matter specifically provided for and
     contemplated by an Existing Lease and which is approved by Purchaser as a
     Purchaser Consent Action.

         2.  PURCHASE AND SALE.

                                      -10-


         (a) Subject to the terms and provisions set forth in this Agreement, on
the Closing Date: (i) Seller shall transfer, assign and convey the Unit to
Purchaser, and (ii) Purchaser shall pay the Purchase Price to the Exchange
Intermediary as provided in subsection (b) below.

         (b) The Purchase Price (as adjusted in accordance with the Customary
Adjustments set forth in Section 6 and the adjustments set forth in Section 7
and Section 8A) is payable by Purchaser in full on the Closing Date. The payment
of the Purchase Price to be made pursuant to the preceding sentence shall be
paid by wire transfer to an account or accounts of Exchange Intermediary or as
specified in writing by Seller or Exchange Intermediary.

         (c) Purchaser acknowledges that, irrespective of whether DLIP assigns
its rights under this Agreement to, or designates the right to take title to the
Unit to, a third party, it is the intention of Seller to convey the Unit to
Purchaser in exchange for Unit 1 in The 399 Park Avenue Condominium and DLIP's
ownership interests in the Common Elements (as such term is defined in the Other
Agreement), which shall be transferred to Seller pursuant to the Other
Agreement, in a manner that qualifies for non-recognition treatment under
Section 1031 of the Internal Revenue Code of 1986, as amended (the "Code") and
should be interpreted consistent with such section (or any successor section)
and any Treasury Regulations promulgated thereunder. Such conveyance to
Purchaser shall be made in consideration of Purchaser acknowledging all
agreements (including, without limitation, an exchange agreement substantially
in the form of Exhibit J attached hereto (the "Exchange Agreement")) necessary
for First American Exchange Corporation, or such other reputable, nationally
recognized exchange intermediary selected by Seller (the "Exchange
Intermediary") to effectuate a "like-kind" exchange (the "Exchange Option"). The
provisions of the Exchange Agreement shall be deemed incorporated into this
Agreement in their entirety. Seller agrees that Purchaser's cooperation with
respect to the Exchange Option shall not modify the rights or obligations of
either party to this Agreement, except as set forth in the Exchange Agreement
and the other documents that will be required to be executed pursuant to the
Exchange Agreement in connection with the Exchange Option. In the event that any
provision of the Exchange Agreement conflicts with any subsequent changes in
Section 1031 of the Code or regulations thereunder, Seller and Purchaser agree
to amend or modify such provision to the extent necessary to permit the
transaction contemplated thereby to qualify for non-recognition treatment under
Section 1031 of the Code provided that neither Seller nor Purchaser is adversely
affected by such amendment or modification.

                                      -11-


         (d) Included in the sale of each Unit is all of the right, title and
interest of Seller in and to the following:

                  (i)     an undivided interest in the Common Elements;

                  (ii)    all easements, covenants, servitudes and other rights
         and interests now belonging or appertaining to, or comprising a part
         of, the Unit, and all right, title and interest of Seller in and to any
         land lying in the bed of any street, road, avenue or alley, open or
         closed, in front of or behind or otherwise adjoining the Unit and to
         the center line thereof;

                  (iii)   the buildings, structures, fixtures and other
         improvements (including, without limitation, escalators), and the
         furniture, equipment, supplies, tools, machinery, security systems,
         computer software and other personal property (excluding items owned,
         or leased from leasing companies, by any tenants or any property
         manager who is not an affiliate of Seller and also excluding the lobby
         building directory) which are now located on or attached to the Unit,
         and any leases under which any of the same may be under lease to Seller
         for use at the Unit;

                  (iv)    to the extent they may be transferred under applicable
         law, all licenses, permits, approvals and authorizations required for
         the use and operation of all or any part of the Unit;

                  (v)     the assignable Contracts (other than those terminated
         in accordance with Section 11(a)(x) of this Agreement);

                  (vi)    to the extent they may be transferred, warranties
         covering any portion of the Unit or any of the other property included
         in the transaction contemplated by this Agreement;

                  (vii)   the Leases, together with all security deposits paid
         under the Leases;

                  (viii)  all existing surveys, operation surveys, management
         reports, equipment operation standards, blueprints, drawings, plans and
         specifications (including, without limitation, structural, HVAC,
         mechanical and plumbing plans and specifications) pertaining to the
         Unit or the Condominium in the possession or control of Seller;

                                      -12-


                  (ix)    all available tenant lists, lease files,
         correspondence, documents, booklets, manuals and promotional and
         advertising materials concerning the Unit or used in connection with
         the operation of the Unit or the Condominium, or any part thereof, to
         the extent any of the foregoing are located at the Unit (or any of
         Seller's offices) or any property manager's office or otherwise in
         possession of Seller, and shall specifically exclude any internal books
         and records of Seller (except to the extent relating to the operation
         of the Unit) maintained at any of Seller's offices, internal and
         external appraisals of the Unit and any other privileged or proprietary
         information not otherwise in the possession of Seller; and

                  (x)     all other intangible personal property owned by Seller
         or in which Seller otherwise has an interest, and used solely in
         connection with or arising in connection with the business conducted on
         or from the Unit or any part thereof, including, if available,
         telephone exchange numbers, specifically excluding, however, any names
         or marks of Seller or any affiliates of Seller.

Seller shall deliver or cause to be delivered to Purchaser at the Closing such
deeds, bills of sale, assignments or other transfer documents necessary to
transfer Seller's interest in and to all of the foregoing property to Purchaser
consistent with the terms of this Agreement, which obligation shall survive the
Closing for a period of one (1) year.

         (e) Seller and Purchaser acknowledge and agree that the value of the
Church Lease and the personal property that is included in the transaction
contemplated by this Agreement is DE MINIMIS and no part of the Purchase Price
is allocable thereto.

         3.  THE CITIBANK LEASE. On the Closing Date, Purchaser shall lease to
Seller and Seller shall hire from Purchaser, the Citibank Leased Premises,
pursuant to the terms and conditions of the lease attached hereto as Exhibit K
(the "Citibank Lease").

         4.  STATUS OF TITLE; TITLE
             INSURANCE AND SURVEY COSTS

         (a) The Unit shall be conveyed to Purchaser, subject only to (i) the
standard exceptions and provisions contained in the form of 1992 ALTA owner's
title insurance policy employed by the Title Insurer, (ii) those matters set
forth on Schedule 4(a) to this Agreement, (iii) any Title Exceptions that are
created, allowed or suffered to exist by Purchaser or the Board of Managers and
(iv) any Title Exceptions that are approved or waived by Purchaser in writing
(collectively, the "Permitted Encumbrances"). Mechanics liens and other liens or
encumbrances related to proposed or actual work with respect to the Unit shall
not in any circumstance constitute Permitted Encumbrances. Seller shall use its
good faith commercially

                                      -13-


reasonable efforts to cause all open building permits with respect to the Unit
(other than those which are the responsibility of any tenant or other occupant
of the Unit) to be closed out on or before the Closing Date. Notwithstanding the
foregoing, if such permits have not been closed out on or before the Closing
Date, Seller shall deliver an undertaking to Purchaser at Closing to cause such
open building permits to be closed out.

         (b) Seller shall not create or allow or suffer to exist any Title
Exception which is not a Permitted Encumbrance without the consent of Purchaser.
Each of Seller and Purchaser agree that during the period prior to the Closing
its representatives to the Board of Managers will approve Title Exceptions only
with the contemporaneous unanimous approval of the other party's representatives
to the Board of Managers. If on the date of the Closing, there are any Title
Exceptions that are not Permitted Encumbrances, Purchaser shall, to the extent
necessary or required, cooperate with Seller in removing such Title Exceptions
or causing such Title Exceptions to be removed, and Seller shall be absolutely
and unconditionally obligated to pay, discharge and/or otherwise remove such
Title Exceptions (other than those created or allowed or suffered to exist by
Purchaser or the Board of Managers) or to cause any such Title Exceptions to be
removed irrespective of the cost therefor, and the Purchaser shall have such
rights of action against Seller, at law or in equity, to cause Seller to convey
title to the Unit subject only to Permitted Encumbrances. Notwithstanding the
foregoing, Purchaser may elect to accept such title as Seller can convey,
notwithstanding the existence of Title Exceptions that are not Permitted
Encumbrances. In such event, this Agreement shall remain in effect and the
parties shall proceed to Closing, but Purchaser shall not be entitled to any
credit or allowance of any kind or any claim or right of action against Seller
for damages or otherwise by reason of the existence of any Title Exceptions
which are not Permitted Encumbrances.

         (c) The costs of examination of title (including all UCC, tax and other
searches) and title premiums for the issuance by the Title Insurer of policies
of title insurance insuring Purchaser's fee interest in the Unit, conforming to
the requirements of Purchaser (other than endorsements required to be obtained
by Seller pursuant to Section 4(b) to remove Title Exceptions that are not
Permitted Encumbrances or additional title premiums payable in connection with
the removal of such Title Exceptions by Seller), shall be paid by Purchaser. The
cost of obtaining new or updated surveys for the Unit, conforming to the
requirements of Purchaser or its assignee or designee shall be paid by
Purchaser.

         (d) If any title report discloses judgments, bankruptcies or other
returns against other persons having names the same as, or similar to, that of
Seller, Seller on request, shall deliver to the Title Insurer affidavits showing
that such judgments, bankruptcies or other returns are not against Seller in
order to induce the Title Insurer to omit exceptions with respect to such
judgments, bankruptcies or other returns or to insure over same. In addition,
Seller, on request, shall deliver to the Title Insurer, all customary affidavits
reasonably required by the Title Insurer to omit (i) exceptions with respect to
municipal emergency

                                      -14-


repairs, (ii) exceptions with respect to (A) retroactive street vault charges,
together with interest and penalties thereon, and (B) work done by the City of
New York upon the Unit or the Condominium or any demand made by the City of New
York for any such work that may result in charges by the New York City
Department of Environmental Protection for water tap closings or any related
work, (iii) exceptions with respect to fees for inspections, reinspections,
examinations and services performed by the Department of Buildings or for
permits issued by the Department of Buildings and (iv) any other exceptions of a
similar type. Seller, on request, shall also deliver to the Title Insurer all
customary affidavits reasonably required by the Title Insurer to modify or omit
(in accordance with the customary practice in New York City) the standard
printed exceptions to title contained in the form of 1992 ALTA owner's title
insurance policy employed by the Title Insurer.


         (e) To the extent necessary or required, Purchaser shall cooperate with
Seller and, upon request of Seller, deliver to the Title Insurer such affidavits
as may be required by the Title Insurer (by virtue of the fact that the Unit is
subject to the condominium form of ownership) to enable the Title Insurer to
insure Purchaser's title to the Unit in the manner required by this Agreement.

         5.  BROKERS AND ADVISORS.

         (a) Purchaser represents and warrants that it has not dealt or
negotiated with any broker with respect to the transactions contemplated by this
Agreement other than Jones Lang LaSalle and LaSalle Investment Management, Inc.
(collectively, "JLL") and Salomon Smith Barney Inc. ("SSB") and Purchaser shall
pay all fees due to JLL in connection therewith pursuant to a separate
agreement. Purchaser shall indemnify, defend and hold Seller harmless, from and
against any and all loss, cost, damage, claim, liability and expense (including,
without limitation, reasonable attorneys' fees) resulting from a breach of the
foregoing representation and warranty.

         (b) Seller represents and warrants that it has not dealt or negotiated
with any broker with respect to the transactions contemplated by this Agreement
other than JLL and SSB and Seller shall pay all fees due to SSB in connection
therewith pursuant to a separate agreement. Seller shall indemnify, defend and
hold Purchaser harmless, from and against any and all loss, cost, damage, claim,
liability and expense (including, without limitation, reasonable attorneys'
fees) resulting from a breach of the foregoing representation and warranty.

         (c) Purchaser shall be responsible for the payment of all professionals
and advisors retained by Purchaser in connection with the transactions
contemplated by this Agreement. Seller shall be responsible for the payment of
all professionals and

                                      -15-


advisors retained by Seller in connection with the transactions contemplated by
this Agreement.

         (d) The provisions of this Section 5 shall survive the Closing for a
period without expiration.

         6.  CUSTOMARY CLOSING ADJUSTMENTS.

         (a) The following are to be apportioned for the Unit as of the
Apportionment Date (subject to the rights of tenants under their Leases), and
shall (except as expressly set forth herein) constitute an adjustment with
respect to the Purchase Price as of the Apportionment Date:

                  (i)     real estate taxes, personal property taxes and all
         assessments (special and general) for the current tax fiscal period in
         progress on the Apportionment Date (it being agreed that the same shall
         be adjusted on an accrual basis). If the rate or amount of such taxes
         shall not be fixed prior to the Closing Date, the adjustment thereof as
         of the Apportionment Date shall be upon the basis of the rate for the
         preceding tax fiscal period applied to the latest assessed valuation
         (or, if none, other basis of valuation, including without limitation,
         written opinions of tax adjusters or as otherwise agreed to by Seller
         and Purchaser), and the same shall be further adjusted no later than
         thirty (30) days after the date on which the taxes for the current tax
         fiscal period in progress on the Apportionment Date are paid;

                  (ii)    unless final meter readings are obtained on the
         Apportionment Date (for which Seller shall be solely responsible),
         vault charges, water and sewer service charges, and charges for all
         other public utilities, including, without limitation, steam,
         electricity and gas (to the extent the Unit owner is responsible for
         the payment thereof). The rights to the return of any deposits with
         utility companies shall be retained by Seller. Purchaser shall promptly
         upon request of Seller put up any replacement deposit on or about the
         Closing Date which may be required by a utility company as a
         precondition to the release of Seller's deposit;

                  (iii)   base rents, fixed rents, additional rents, escalation
         rents, percentage rents and any other rents (exclusive of advance rents
         and security deposits) paid or payable for the billing period in
         progress as of the Apportionment Date in accordance with Section 8A of
         this Agreement; it being agreed that to the extent, on the
         Apportionment Date, additional rents, escalation rents, percentage
         rents or other rents have not been collected for such billing period,
         then each such item shall be adjusted retroactively to the
         Apportionment Date in

                                      -16-


         accordance with Section 8A and this Section 6 no later than thirty (30)
         days after each such item has been collected. Percentage rent, payments
         or reimbursements on account of operating expenses and real estate
         taxes, utility charges and any other payments, reimbursements or
         contributions by tenants under the Leases shall be prorated as follows:
         (y) with respect to percentage rents (if any), Purchaser shall furnish
         to Seller promptly upon receipt copies of all sales reports from
         tenants who owe percentage rent for any period prior to the
         Apportionment Date, whereupon the percentage rent due (if any) shall be
         promptly calculated and the proration between Seller and Purchaser
         computed as of the Apportionment Date; and (z) the amount of any other
         rents, payments, reimbursements or contributions to be made by any
         tenant shall be computed in accordance with such tenant's Lease as
         existing as of the Apportionment Date; and (provided that such tenant's
         rent payments are not in arrears) Purchaser shall remit to Seller
         Seller's pro rata portion of such percentage rents (if any) and any
         other rents, payments, reimbursements or contributions (based upon
         apportionment being made as of the Apportionment Date) promptly after
         such rents, payments, reimbursements or contributions have been
         collected by Purchaser from such tenant. If Seller has collected
         estimated amounts of prepayments in excess of the amounts properly
         payable under any tenant's Lease, (i) Seller shall promptly remit said
         excess to Purchaser after notice from Purchaser and after such excess
         is verified by a review or analysis of estimated prepayments in
         accordance with such tenant's Lease, (ii) Purchaser shall promptly
         remit to the applicable tenant any such excess paid over to Purchaser
         pursuant to the preceding clause (i), and (iii) Purchaser shall
         indemnify and hold Seller harmless from all claims, demands, causes of
         actions, losses, damages, liabilities, costs and expenses (including,
         without limitation, reasonable attorneys' fees and disbursements)
         asserted against or incurred by Seller in connection with or arising
         out of Purchaser's failure to fulfill its obligations pursuant to the
         preceding clause (ii) of this sentence;

                  (iv)    permit fees and license fees with respect to any
         assigned permits and licenses;

                  (v)     charges and payments under assignable Contracts (other
         than those terminated in accordance with Section 11(a)(x) of this
         Agreement) or permitted renewals or replacements thereof; and

                  (vi)    insurance premiums and other similar prepaid expenses
         (to the extent Purchaser retains the same), Common Charges and Limited
         Common Charges (as such terms are defined in the Condominium
         Declaration) and any Grand Central Partnership payments or dues
         applicable to the Unit, operating agreement payments (if such
         agreements are assumed by Purchaser) and such

                                      -17-


         other items that, in New York, New York, are customarily prorated,
         adjusted or paid in accordance with the "customs in respect to title
         closings" recommended by The Real Estate Board of New York, Inc., as
         amended and in effect on the date of Closing, in connection with the
         sale or exchange of property similar to the Unit, consistent with the
         terms and provisions of this Agreement.

         (b) All funds in any operating accounts, reserve accounts or any other
accounts pertaining to the Unit on the Apportionment Date, whether in the name
of Seller or any property manager of the Unit, shall (subject to the terms of
any applicable Leases and the adjustments required under this Agreement) be
retained by Seller or applied as Seller shall direct, and all cash, coins and
petty cash to which Seller is entitled (including, without limitation, cash in
coin operated machines, if any) located in the Unit shall be counted by Seller
or any such property manager on the Apportionment Date and the same shall be
retained by Seller or remitted to Seller by any such property manager.

         (c) The security deposits and advance rents with respect to the Leases
(together with any interest thereon required pursuant to the terms of the Leases
or applicable law) shall not be pro-rated, but instead shall be paid over to
Purchaser on the Closing Date, provided that, if such security deposits or
advance rents are in the possession or control of any property manager, at
Purchaser's request Seller shall direct such property manager in writing to
retain possession or control thereof for the benefit of Purchaser. Promptly
after the Closing (irrespective of when such Closing occurs), Seller shall
transfer or cause to be transferred to Purchaser any and all letters of credit
and Seller's interest in any certificates of deposit held by Seller as security
for a tenant's performance under any of the Leases being assigned to Purchaser.
If any such letter of credit is non-transferable, Seller shall use its good
faith efforts to have such letter of credit reissued in the name of Purchaser
(at Seller's sole cost and expense), and failing that, Seller agrees to continue
holding any such non-transferable letter of credit and agrees to present the
letter of credit for payment or to release the letter of credit on the written
instructions of Purchaser and will remit any funds collected thereunder to
Purchaser (less any reasonable costs of collection), provided that Seller is
indemnified and held harmless by Purchaser from and against any liability, cost
or expense as a result thereof.

         (d) INTENTIONALLY OMITTED.

         (e) UNANTICIPATED CAPITAL EXPENDITURES. Seller shall be responsible for
the payment of all Unanticipated Capital Expenditures incurred during the
Interim Period. If on the Closing Date any Unanticipated Capital Improvements
have not been completed and/or funded by Seller, then Purchaser shall receive a
credit at Closing in an amount equal to the amount of any such unfunded items
and the cost to complete any such unfunded work.

                                      -18-


         (f) LEASING COMMISSIONS, TENANT ALLOWANCES AND BUDGETED REPAIRS. Seller
and Purchaser shall each be responsible for the payment of those (i) Leasing
Commissions relating to Existing Leases and Approved New Leases allocable to
each such party as set forth on Schedule 6(f)(i) attached to this Agreement,
(ii) Tenant Allowances that are the obligation of the landlord under the
Existing Leases and the Approved New Leases allocable to each such party as set
forth on Schedule 6(f)(ii) attached to this Agreement and (iii) Budgeted Repairs
under Construction Contracts allocable to each such party as set forth on
Schedule 6(f)(iii) attached to this Agreement. If on the Closing Date any items
allocable to Seller on any of the foregoing Schedules 6(f)(i)-(iv) in respect of
Budgeted Repairs, Leasing Commissions or Tenant Allowances have not been
completed and/or funded by Seller, then Purchaser shall receive a credit at
Closing in an amount equal to the amount of any such unfunded items and the cost
to complete any such unfunded work.

         (g) INTENTIONALLY OMITTED.

         (h) SURVIVAL. Seller and Purchaser agree to use reasonable efforts to
calculate all adjustments required under this Section 6 with respect to those
items of income and expense that are ascertainable on the Apportionment Date by
no later than the sixty (60) days after the Apportionment Date. Each other item
of income and expense that is subject to adjustment under this Section 6 but
that is not ascertainable on the Apportionment Date will be adjusted retroactive
to the Apportionment Date, and the payment made on such adjustment within sixty
(60) days after the date that such adjustment becomes ascertainable (I.E., the
date by which each party, in its good faith business judgment, has sufficient
information to make such adjustment). The parties agree that each party shall
have the right, during the period commencing on the Closing Date and terminating
at the close of business on the one hundred eightieth (180th) day after the
Closing Date, on reasonable advance written notice to the other, from time to
time during regular business hours, to review the books and records of such
other party pertaining solely to the operations of the Unit to the extent
necessary to confirm the amounts of adjustments payable to Seller and/or
Purchaser following the Apportionment Date and in furtherance thereof the
parties shall, upon reasonable advance written notice, make their respective
books and records available for the other during regular business hours and
shall use their good faith commercially reasonable efforts to cause the managing
agent of the Common Elements to make available the applicable portion of its
books and records for such purpose. Seller and Purchaser shall cooperate as
necessary following the Closing Date in order to promptly and in good faith
discharge their respective obligations under this Section 6. Notwithstanding the
foregoing, any claim for an adjustment under Section 6(a) will be valid if made
in writing with reasonable specificity within one (1) year after the Closing
Date, except in the case of items of adjustment which at the expiration of such
period are subject to pending litigation or administrative proceedings. Claims
with respect to items of adjustment that are subject to litigation or
administrative proceedings will be valid if made on or before the later to occur
of (i) the date that is one (1) year after the Closing Date and (ii) the date
that is one hundred eighty (180) days after a final non-appealable order shall
have issued in such litigation

                                      -19-


or administrative hearing. Both parties shall use good faith efforts to resolve
any disputed claims promptly. The provisions of this Section 6 shall survive the
Closing. Purchaser shall notify, or shall cause any property manager retained by
it to notify, Seller of any reimbursement adjustment to which Seller becomes
entitled under the provisions of this Section 6 promptly after Purchaser or such
property manager determines that such reimbursement adjustment is due to Seller.

         7.  EFFECT OF CERTAIN LEASE EVENTS.

         (a) In addition to the Customary Adjustment being calculated as of the
Apportionment Date with respect to the Unit in accordance with the provisions of
Section 6 above and the adjustments set forth in Section 8A, the adjustments set
forth in this Section 7 shall, to the extent applicable, be made on the Closing
Date.

         (b) If a Contractual Right Lease Event occurs with respect to an
Existing Lease during the Interim Period, then (i) during the Interim Period,
Seller alone shall continue to be responsible for the payment of all costs and
expenses attributable to such Existing Lease (as adjusted for the effect of the
Contractual Right Lease Event) and Seller alone shall continue to be entitled to
the receipt of all income generated from such Existing Lease (as adjusted for
the effect of the Contractual Right Lease Event) and (ii) from and after the
Closing Date, Purchaser alone shall be responsible for the payment of all costs
and expenses attributable to such Existing Lease (as adjusted for the effect of
the Contractual Right Lease Event) and Purchaser alone shall be entitled to the
receipt of all income generated from such Existing Lease (as adjusted for the
effect of the Contractual Right Lease Event). If the Contractual Right Lease
Event results in an Adjusted NOI which exceeds the Pro Forma NOI (a "Positive
NOI Adjustment"), then the Positive NOI Adjustment shall inure to the benefit of
Seller from and after the occurrence of the Contractual Right Lease Event up to
and including the Apportionment Date. If the Contractual Right Lease Event
results in a Positive NOI Adjustment, then the Positive NOI Adjustment shall
inure to the benefit of Purchaser from and after the Closing Date. Conversely,
if a Contractual Right Lease Event occurs during the Interim Period and such
Contractual Right Lease Event results in an Adjusted NOI which is less than the
Pro Forma NOI (a "Negative NOI Adjustment"), then the Negative NOI Adjustment
shall be borne by Seller from and after the occurrence of the Contractual Right
Lease Event up to and including the Apportionment Date and shall be borne by
Purchaser from and after the Closing Date. Without limiting the generality of
the foregoing, if upon the occurrence of a Contractual Right Lease Event which
results in the termination of any Existing Lease, any fee or other payment
required to be made by the applicable tenant under such Existing Lease is in
fact paid during the Interim Period as a condition to the termination of such
Existing Lease, such fee or other payment shall belong exclusively to Seller.
Any subsequent re-leasing of the space (or any portion thereof) previously
demised under such terminated Existing Lease during the Interim Period shall
constitute a Purchaser Consent Action, subject to the provisions of Section
8(a)(i) of this Agreement, it being the intention of

                                      -20-


the parties that Purchaser shall ultimately bear all the risks and rewards of
such re-leasing; provided, however, (i) during the Interim Period, subject to
the following provisions of this Section, Seller alone shall be responsible for
the payment of all costs and expenses of re-leasing the space in question
(including, without limitation, all tenant improvement expenses, tenant
allowances, leasing commissions, referral fees and legal fees) and Seller alone
shall be entitled to the receipt of all income therefrom and (ii) from and after
the Closing Date, Purchaser alone shall be responsible for the payment of all
costs and expenses of re-leasing the space in question (including, without
limitation, all tenant improvement expenses, tenant allowances, leasing
commissions, referral fees and legal fees) and Purchaser alone shall be entitled
to the receipt of all income therefrom. Notwithstanding the foregoing, (i) if
the expenses incurred by Seller during the Interim Period in connection with
such re-leasing of the space (or any portion thereof) previously demised under
an Existing Lease exceeds the gross income received by Seller during the Interim
Period as the result of such re-leasing, then Seller shall receive a credit at
Closing in the amount of such excess and (ii) if the gross income received by
Seller during the Interim Period as the result of such re-leasing of the space
(or any portion thereof) previously demised under an Existing Lease exceeds the
expenses incurred by Seller during the Interim Period in connection with such
re-leasing, then Purchaser shall receive a credit at Closing in the amount of
such excess. Notwithstanding the foregoing, with respect to any Contractual
Right Lease Event that does not result in the termination of an Existing Lease,
at Closing, Seller shall also receive a credit in an amount equal to all tenant
improvement expenses, tenant allowances, leasing commissions, referral fees and
legal fees incurred in connection with such Contractual Right Lease Event.

         (c) If an Involuntary Lease Event occurs with respect to an Existing
Lease during the Interim Period, then during the Interim Period, Seller alone
shall continue to be responsible for the payment of all costs and expenses
attributable to such Existing Lease (as adjusted for the effect of the
Involuntary Lease Event) and Seller alone shall be entitled to the receipt of
all income generated from such Existing Lease (as adjusted for the effect of the
Involuntary Lease Event). If the Involuntary Lease Event results in a Negative
NOI Adjustment, then the Negative NOI Adjustment shall be borne by Seller from
and after the occurrence of the Involuntary Lease Event up to and including the
Apportionment Date and shall be borne by Purchaser from and after the Closing
Date. Following the occurrence of an Involuntary Lease Event during the Interim
Period which results in a tenant vacating the space demised under an Existing
Lease prior to the scheduled expiration thereof, any subsequent re-leasing of
the space (or any portion thereof) previously demised under such Existing Lease
during the Interim Period shall constitute a Purchaser Consent Action, subject
to the provisions of Section 8(a)(i) of this Agreement, it being the intention
of the parties that Purchaser shall ultimately bear all the risks and rewards of
such re-leasing; provided, however, (i) during the Interim Period, subject to
the following provisions of this Section, Seller alone shall be responsible for
the payment of all costs and expenses of re-leasing the space in question
(including, without limitation, all tenant improvement expenses, tenant
allowances, leasing commissions, referral fees and legal fees) and Seller alone
shall be entitled

                                      -21-


to the receipt of all income therefrom and (ii) from and after the Closing Date,
Purchaser alone shall be responsible for the payment of all costs and expenses
of re-leasing the space in question (including, without limitation, all tenant
improvement expenses, tenant allowances, leasing commissions, referral fees and
legal fees) and Purchaser alone shall be entitled to the receipt of all income
therefrom. Notwithstanding the foregoing, (i) if the expenses incurred by Seller
during the Interim Period in connection with such re-leasing of the space (or
any portion thereof) previously demised under an Existing Lease exceeds the
gross income received by Seller during the Interim Period as the result of such
re-leasing, then Seller shall receive a credit at Closing in the amount of such
excess and (ii) if the gross income received by Seller during the Interim Period
as the result of such re-leasing of the space (or any portion thereof)
previously demised under an Existing Lease exceeds the expenses incurred by
Seller during the Interim Period in connection with such re-leasing, then
Purchaser shall receive a credit at Closing in the amount of such excess. The
collection of Receivables and other amounts due from tenants as the result of an
Involuntary Lease Event shall be undertaken in accordance with the provisions of
Section 8A and any sums actually collected as a result thereof shall be applied
in the manner prescribed in such Section.

         (d) If a Voluntary Lease Event occurs with respect to an Existing Lease
during the Interim Period, then, subject to the following provisions of this
Section, (i) during the Interim Period, Seller alone shall continue to be
responsible for the payment of those costs and expenses (including, without
limitation, all tenant improvement expenses, tenant allowances, leasing
commissions, referral fees and legal fees) attributable to such Existing Lease
(as adjusted for the effect of the Voluntary Lease Event), and Seller alone
shall continue to be entitled to the receipt of all income generated from such
Existing Lease (as adjusted for the effect of the Voluntary Lease Event), and
(ii) from and after the Closing Date, Purchaser alone shall be responsible for
the payment of all costs and expenses (including, without limitation, all tenant
improvement expenses, tenant allowances, leasing commissions, referral fees and
legal fees) attributable to such Existing Lease (as adjusted for the effect of
the Voluntary Lease Event) and Purchaser alone shall be entitled to the receipt
of all income from such Existing Lease (as adjusted for the effect of the
Voluntary Lease Event). Notwithstanding the foregoing, (A) if the Pro Forma NOI
which is allocable to an Existing Lease (as adjusted to reflect the actual
Closing Date) is increased as the result of a Voluntary Lease Event, then
Purchaser shall receive a credit at Closing in the amount of such excess and (B)
if the Pro Forma NOI which is allocable to an Existing Lease (as adjusted to
reflect the actual Closing Date) is decreased as the result of a Voluntary Lease
Event, then Seller shall receive a credit at Closing in the amount of such
shortfall. At Closing, Seller shall also receive a credit in an amount (without
duplication of any operating expense item included in the calculation of Pro
Forma NOI pursuant to the immediately preceding sentence) equal to all tenant
improvement expenses, tenant allowances, leasing commissions, referral fees and
legal fees incurred during the Interim Period as the result of any Voluntary
Lease Event with respect to an Existing Lease, including, without limitation,
all such tenant improvement expenses,

                                      -22-


tenant allowances, leasing commissions, referral fees and legal fees incurred in
connection with the re-leasing of any space which is vacated as a result of such
Voluntary Lease Event.

         (e) The provisions of this Section 7 shall survive the Closing for a
period of two (2) years.


         8.  OPERATION OF THE UNIT PRIOR TO CLOSING.

         (a) OPERATION OF THE UNIT DURING THE INTERIM PERIOD. During the Interim
Period, Seller shall have the right and the obligation to continue to operate
and maintain the Unit, subject to the limitations set forth in the Condominium
Declaration. In connection therewith:

                  (i)     From the date hereof until the Closing, Seller shall
         not take, or allow any property manager retained by it to take, any
         Purchaser Consent Action, without the prior written consent of the
         Purchaser (which consent may be withheld in Purchaser's sole and
         absolute discretion). With respect to any proposed Purchaser Consent
         Action to be submitted to Purchaser for its consent pursuant to the
         preceding sentence, Purchaser shall consent or deny its consent, within
         five (5) business days following receipt by Purchaser of Seller's
         notice requesting Purchaser's consent to the proposed action and
         providing Purchaser with all background information necessary for
         Purchaser to make its decision. Failure to respond within such five (5)
         business day period shall be deemed to be an approval of the Purchaser
         Consent Action in question. It is understood that a non-discretionary
         lease renewal, expansion, surrender of space, sublease or assignment
         right or other similar right expressly set forth in an Existing Lease
         in favor of a tenant shall not be deemed to be a Purchaser Consent
         Action to the extent that the specific terms therefor are embodied in
         the lease in question and are non-subjective in nature. For example, if
         a renewal has been granted in favor of a tenant for a specific term and
         at a specified fixed dollar rent per square foot, such renewal will not
         be a Purchaser Consent Action. On the other hand, if a renewal has been
         granted to a tenant for a specific term and at a fair market rent to be
         mutually agreed upon by the Seller and tenant, the ability of Seller to
         agree upon a fair market rent shall be a Purchaser Consent Action. In
         addition to the foregoing, Seller shall not take, or allow any property
         manager retained by it to take, any actions contained in clause (i) of
         the definition of Excluded Decisions to the extent such action relates
         to the granting or withholding of a consent right with respect to a
         material matter under any Lease or involves the incurrence of a
         material expenditure, obligation or other liability without first
         providing written notice to Purchaser of its intention to do so, and
         the reasons therefor; provided, however, Seller agrees that, to the
         extent requested in writing by Purchaser within three (3) business days
         after receipt by Purchaser of such

                                      -23-


         notice from Seller, Seller shall refrain from taking any such
         contemplated action, provided that Purchaser agrees to indemnify and
         hold Seller harmless from any loss, cost, damage, claim, liability and
         expense (including, without limitation, reasonable attorneys' fees)
         which Seller shall incur resulting from Seller's failure to take any
         such action.

                  (ii)    Intentionally Omitted

                  (iii)   From the date hereof until the Closing, Seller shall
         not take, or omit to take, any action that would have the effect of
         violating in any material respect any of the representations,
         warranties, covenants and agreements of Seller contained in this
         Agreement. Nothing contained in the foregoing sentence shall be
         construed to preclude Seller from taking, or omitting to take, any
         action that is (x) approved in writing by Purchaser (whether as a
         Purchaser Consent Action or otherwise), (y) required to be taken
         pursuant to this Agreement, or (z) pertaining to the Common Elements
         and approved by the Board of Managers. From the date hereof until the
         Closing, Purchaser shall not take, or omit to take, any action that
         would have the effect of violating in any material respect any of the
         representations, warranties, covenants and agreements of Purchaser
         contained in this Agreement.

                  (iv)    From the date hereof until the Closing, Seller shall
         not sell, assign, or convey any right, title or interest whatsoever in
         or to the Unit, or create or permit to exist any lien, security
         interest, easement, encumbrance, charge or condition affecting the Unit
         (other than a Permitted Encumbrance), without the prior consent of
         Purchaser except to the extent relating to (w) actions reasonably
         necessary or desirable in connection with the marketing and sale of the
         Unit to the Purchaser pursuant to the Exchange Agreement contemplated
         by this Agreement, (x) leasing of the Unit or portions thereof as
         permitted in accordance with this Agreement, (y) items affecting the
         Common Elements approved by the Board of Managers or (z) items approved
         in writing by Purchaser (whether as a Purchaser Consent Action or
         otherwise).

                  (v)     From the date hereof until the Closing, Seller shall
         promptly deliver to Purchaser copies of (a) written default notices,
         notices of lawsuits and notices of violations affecting the Unit that
         are sent or actually received by Seller, (b) without duplication of
         anything contained in the preceding clause (a), any notice received
         from the City of New York, any taxing authority and any other
         municipal, governmental or quasi-governmental entity or agency
         pertaining to the Unit, and any notices received from the Grand Central
         Partnership and (c) monthly operating statements for the Unit.

                  (vi)    From the date hereof until the Closing, Seller shall
         maintain in full force and effect business interruption insurance to
         cover loss of rental income in an amount not less than twelve (12)
         months' projected gross income of the Unit and the other

                                      -24-


         insurance polices described in Schedule 11(a)(xv) attached hereto and
         shall otherwise continue to operate the Unit in substantially the same
         manner as it operated the Unit prior to the execution and delivery of
         this Agreement and otherwise in a first-class manner, and shall pay all
         operating expenses and real estate taxes which are the responsibility
         of the owner of the Unit during the Interim Period.

                  (vii)   From the date hereof until the Closing, Seller and
         Purchaser shall convene (by phone or in person) not less frequently
         than once per calendar week to discuss any and all matters relating to
         the operation, management, leasing, maintenance or repair of the Unit.
         Each party hereto shall exercise its rights and obligations under this
         Agreement in a manner which is consistent with the rights and
         obligations of the parties under the Condominium Declaration.

                  (viii)  From the date hereof until the Closing, Seller shall
         file with the New York City Department of Finance ("NYCDF"), at such
         times and in such manner as may be required under New York City
         Administrative Codess.11-256 et. seq., the Industrial and Commercial
         Incentive Program ("ICIP"), a Certificate of Continuing Use and such
         other documentation as the NYCDF may reasonably require.

                  (ix)    From the date hereof until the Closing, Seller shall
         deliver to Purchaser, promptly after the execution and delivery thereof
         by all parties thereto, copies of all agreements pertaining to Lease
         Events.


         8A. TREATMENT OF CERTAIN MATTERS.

         (a) COLLECTION OF RECEIVABLES, CURRENT SUMS AND ARREARAGES.

         (1) Seller shall, until the Closing Date, undertake its customary
collection efforts to collect all Receivables and other amounts due from tenants
(subject to the limitations provided in Section 8A(a)(5) below), which may
include the submission of monthly invoices and follow-up invoices, and may (but
need not) include the commencement or continuation of litigation or other
proceedings, it being agreed that any monies received by Seller as a result of
such collection efforts (net of the reasonable costs allocable to the collection
of the same) attributable to the period prior to the Closing Date shall (except
as specifically provided to the contrary in Sections 7(b), (c) and (d)) belong
to Seller and shall not constitute a credit against the Purchase Price.

         (2) Purchaser shall, from and after the Closing Date, undertake its
customary collection efforts on behalf of Seller to collect all Receivables for
a period of six (6) months after the Closing Date (subject to the limitations
provided in Section 8A(a)(5) below), which may include the submission of monthly
invoices and follow-up invoices, and may (but need

                                      -25-


not) include the commencement or continuation of litigation or other
proceedings, it being agreed that in such cases any monies received by Purchaser
from and after the Closing Date from any party liable for any portion of the
Receivables to be collected by Purchaser shall be applied in the following
order:

         FIRST            to the payment pro-rata (on the basis of costs
                          incurred) of all reasonable costs of collection,
                          including reimbursement to Seller or Purchaser of any
                          legal fees or collection costs reasonably incurred by
                          either of them and allocable to the collection of such
                          Receivables pursuant to the foregoing provisions of
                          this Section,

         SECOND           to the payment of monies owed to Seller and Purchaser
                          for the billing period in progress on the Closing
                          Date,

         THIRD            to Purchaser for sums owed to Purchaser relating to
                          billing periods after the billing period in progress
                          as of the Closing Date, and

         LAST             to the balance of any Receivables.

         (3) If within six (6) months following the Closing Date, any of the
Receivables to be collected by Purchaser that are payable to Seller in
accordance with the terms of this Section 8A(a) have not been collected and
remitted to Seller, or Purchaser has not commenced litigation to collect such
Receivables, then Seller may undertake its own efforts to collect such
Receivables, including the commencement of litigation and other proceedings (but
Seller shall not seek to evict any tenant or terminate any Lease), and in which
event all sums collected by Seller as a result of such litigation (after payment
of all costs and expenses) shall be applied in full satisfaction of the subject
Receivables, it being agreed that Seller shall refrain from taking any such
efforts during the six (6) month period following the Closing Date.

         (4) With respect to any pending litigation or other proceedings to
collect any Receivables from tenants in occupancy on the Closing Date, Purchaser
shall have the option on the Closing Date of either (i) continuing such
litigation or proceedings (the costs of which shall be equitably apportioned
between Seller and Purchaser, based upon the amounts ultimately paid to each,
and reimbursed out of the first monies collected, if any) and Purchaser shall be
substituted as the plaintiff, if necessary, or (ii) not continuing the
litigation, whereupon Seller may continue such litigation in its own name and at
its sole cost and expense, provided that such litigation shall not result in the
eviction of the tenant or the termination of its Lease without Purchaser's
consent, and in which event all sums collected by Seller as a result of such
litigation (after payment of all actual out-of-pocket costs and expenses) shall
be applied in full satisfaction of the subject Receivables.

                                      -26-


         (5) Notwithstanding anything hereinabove provided, (i) during the
Interim Period, Seller shall not settle or compromise any claims against any
tenants of the Unit without Purchaser's prior written approval, it being agreed
that the settlement or compromise of any such claims shall constitute a
Purchaser Consent Action, subject to the provisions of Section 8(a) of this
Agreement, (ii) after the Closing, neither Seller nor Purchaser shall settle or
compromise any claims against any tenants of the Unit which include both
Receivables payable to Seller and amounts payable to Purchaser without the other
party's prior written approval, which approval shall not be unreasonably
withheld or delayed and (iii) to the extent the Receivables that are subject to
collection are the Receivables identified in clause (ii) of the definition of
Receivables, the rights and obligations of Seller and Purchaser shall be
qualified to provide that such parties shall use commercially reasonable good
faith efforts to cause the Board of Managers to comply with the relevant
provisions of Section 8A of this Agreement. Notwithstanding the foregoing,
Purchaser shall have the right to settle or compromise a claim against a tenant
of the Unit without the consent of (but after prior notice to) Seller to the
extent such claim relates solely to the period of time after the Closing and
provided that the settlement or compromise of such claim does not have a
material adverse effect on any claim that Seller may have against such tenant.

         (6) Notwithstanding anything to the contrary hereinabove provided,
Seller shall retain the sole right to collect (in such manner as it shall deem
appropriate) those Receivables, if any, listed on Schedule 8A(a)(6) attached
hereto as well as Receivables with respect to any tenant whose lease has
terminated prior to the Apportionment Date and has vacated its demised premises,
it being further agreed that Purchaser shall not be required to undertake any
collection efforts with respect to such Receivables.

         (7) Any monies received by Seller or Purchaser that are to be applied
to sums owed to the other party hereto hereunder (whether on account of
Receivables, current sums due, arrearages or otherwise) shall be held in trust
by Seller or Purchaser, as the case may be, for the benefit of the other party
and remitted to such other party promptly after receipt. Seller and Purchaser
shall reasonably cooperate with each other in the collection of Receivables and,
provided there is no liability or material expense associated therewith, shall
execute any documents reasonably requested by the other to collect such
Receivables.

         (b) PROTEST PROCEEDINGS.

                  (1) GENERALLY. As of the date of this Agreement, Seller may
         have engaged various law firms or consultants to protest the valuation
         of the Unit ("Protest Proceedings") for the purpose of protesting the
         amount of ad valorem taxes for certain tax fiscal periods, some of
         which taxes may have been paid by Seller and some of which taxes either
         are not yet due and payable or have not been paid. With respect to the
         tax year in which the Closing occurs, and all prior tax years, Seller
         is hereby authorized (during the Interim Period) to continue any
         Protest Proceeding for the Unit,

                                      -27-


         it being acknowledged that the trial or settlement of any such Protest
         Proceeding during the Interim Period shall constitute a Purchaser
         Consent Action, subject to the provisions of Section 8(a) of this
         Agreement. All net tax refunds and credits attributable to any tax year
         prior to the tax year in which the Closing occurs shall belong to and
         be the property of Seller, subject to the rights of tenants under their
         respective Leases. All net tax refunds and credits attributable to any
         tax year subsequent to the tax year in which the Closing occurs shall
         belong to and be the property of Purchaser, subject to the rights of
         tenants under their respective Leases. All net tax refunds and credits
         attributable to any tax year not described in the preceding two (2)
         sentences shall be divided between Seller and Purchaser in accordance
         with the apportionment of taxes set forth in Section 8A(b)(2) below.
         Seller and Purchaser agree to cooperate with one another in connection
         with the prosecution of any such proceedings and to take all reasonable
         steps, whether before or after the Closing Date, as may be reasonably
         necessary to carry out the intention of the foregoing, including,
         without limitation, to the extent in a party's possession, the delivery
         to the party pursuing the appeal of any relevant books and records,
         including receipted tax bills and canceled checks used in payment of
         such taxes, and, provided that there is no liability or material
         expense to the party delivering such materials in doing so, the
         execution of any and all consents or other documents, and the
         undertaking of any act necessary for the collection of such refund. The
         parties agree to keep one another apprised of all such proceedings, to
         provide one another (except to the extent that the attorney-client
         privilege would be violated) with copies of all relevant books, records
         and documentation relating to any such proceeding, and with respect to
         any course of action which the pursuing party could reasonably expect
         to have a material impact on any proceeding or on the outcome of any
         proceeding, such party agrees to consult with the other party and to
         obtain such party's consent (which consent shall not be unreasonably
         withheld or delayed) before proceeding with any such action.
         Notwithstanding the foregoing limitation, Seller agrees that neither
         Seller nor its representatives will withhold, because of the
         attorney-client privilege or work product immunity, from Purchaser or
         its representatives any relevant information received by Seller or its
         representatives from, or delivered by Seller or its representatives to,
         the New York City taxing authorities. If either party hereto shall
         receive any refund payments contemplated by this subsection 8A(b) which
         are properly payable to the other party, such payments shall be held in
         trust by such party, for the benefit of the other, and remitted to such
         other party promptly after receipt.

                  (2) The Net Refund (as hereinafter defined) payable by virtue
         of a favorable determination resulting from any Protest Proceeding with
         respect to the tax fiscal period in progress on the Apportionment Date
         shall be prorated between Seller and Purchaser on a per diem basis,
         with Seller being entitled to receive the portion thereof allocated to
         the portion of such tax fiscal period up to and including the
         Apportionment Date.

                                      -28-


         The term "Net Refund" as used herein shall mean the portion of any
         refund (including, without limitation, any interest payable thereon)
         that is payable by virtue of a favorable determination resulting from
         any Protest Proceeding and that is entitled to be retained by the party
         so entitled thereto pursuant to the foregoing provisions after (i)
         payment or reimbursement (on a pro-rata basis) of all fees and
         out-of-pocket expenses including, without limitation, counsel fees and
         disbursements and consultant's fees incurred in obtaining such refund,
         the allocation of such expenses to be based upon the total refund
         obtained in such proceeding and in any other proceeding simultaneously
         involved in the trial or settlement and (ii) the refunding by such
         party of the portion of any such refund, if any, owing to tenants under
         the Leases on account of such refund attributable to the applicable
         periods covered thereby.

                  (3) Intentionally Omitted.

                  (4) CONTROL OF PROTEST PROCEEDINGS, SETTLEMENT AND COMPROMISE.
         In connection with any Protest Proceeding for the tax fiscal period in
         progress on the Closing Date, at Purchaser's request Seller shall, if
         possible, cause Purchaser to be substituted for Seller in such Protest
         Proceeding and any other pending Protest Proceedings for tax fiscal
         periods commencing prior to the tax fiscal period in progress on the
         Closing Date, or if not possible, Seller shall permit Purchaser to
         control the conduct of all such Protest Proceedings. Notwithstanding
         anything hereinabove provided, (i) during the Interim Period, Seller
         shall not settle or compromise any Protest Proceedings in which taxes
         for any tax fiscal period in progress on or prior to the Closing are
         being adjudicated without Purchaser's prior written approval, it being
         agreed that the settlement or compromise of any such Protest
         Proceedings shall constitute a Purchaser Consent Action, subject to the
         provisions of Section 8(a) of this Agreement and (ii) after the
         Closing, neither Seller nor Purchaser shall settle or compromise any
         Protest Proceedings pending on the Closing Date in which taxes for any
         tax fiscal period in progress on or prior to the Closing Date are being
         adjudicated without the other party's prior written approval, which
         approval shall not be unreasonably withheld or delayed. Seller and
         Purchaser shall otherwise cooperate with each other in all reasonable
         respects with respect to all Protest Proceedings. From and after the
         Closing Date, Purchaser shall have the right, subject to the above
         provisions of this Section 8A(b)(4) and subject to the terms and
         provisions of the Condominium Declaration, to withdraw, compromise,
         settle, try or otherwise deal with such petitions or applications with
         respect to the Unit as Purchaser in the exercise of its sole judgment
         shall deem appropriate.

         (c) SURVIVAL. The provisions of this Section 8A shall survive the
Closing for a period without expiration.

                                      -29-


         9.  RECORDING CHARGES, TRANSFER AND CONVEYANCE TAXES; WITHHOLDING;
             INTERNAL REVENUE SERVICE REPORTING REQUIREMENTS.

         (a) RECORDING CHARGES; TAXES GENERALLY. Purchaser shall pay all
recording charges and fees and sales taxes, if any, imposed in connection with
the conveyance of the Unit to Purchaser. All real estate transfer and conveyance
taxes paid or payable in connection with the transactions herein contemplated
shall be paid by Seller and/or Purchaser in the manner hereinafter provided in
this Section 9.

         (b) TRANSFER TAXES.

                  (i)     Seller shall pay the New York State Real Estate
         Transfer Tax (the "State Transfer Tax") in accordance with Article 31
         of the Tax Law of the State of New York, and the New York City Real
         Property Transfer Tax (the "City Transfer Tax") imposed by Chapter 21,
         Title 11 of the Administrative Code of the City of New York, in
         connection with the conveyance of the Unit to Purchaser in accordance
         with the provisions of this Agreement. Seller shall defend, indemnify
         and hold harmless Purchaser from and against any loss, cost, damage,
         claim, liability and expense (including, without limitation, reasonable
         attorneys' fees) that may be suffered or incurred by Purchaser by
         reason of the failure of Seller to pay the State Transfer Tax and the
         City Transfer Tax, if applicable, as pertains to this transaction, as
         provided in this Section 9(b), it being understood that the foregoing
         indemnification shall not apply to any tax liability resulting from an
         actual disposition of the Unit by Purchaser following its acquisition
         thereof at the Closing.

                  (ii)    In addition to the foregoing, Seller shall defend,
         indemnify and hold harmless Purchaser from and against any additional
         State Transfer Tax and/or City Transfer Tax (inclusive of interest and
         penalties thereon) that may be suffered or incurred by Purchaser by
         reason of the assertion by any taxing authority having jurisdiction
         over the subject matter thereof that (i) the conveyance of the Unit to
         DLIP's assignee in the manner contemplated by this Agreement
         constitutes a "double transfer" or (ii) the purchase price for the Unit
         under this Agreement should have been in excess of $185,000,000.

                  (iii)   Seller and Purchaser shall each execute and/or swear
         to the returns or statements required in connection with the State
         Transfer Tax and the City Transfer Tax, and any other taxes referred to
         in this Section 9(b) or otherwise applicable to the transactions
         contemplated by this Agreement, and shall deliver same, together with
         the check or checks of Seller and/or Purchaser, as the case may be, in
         payment thereof which are required of such party, to the Title Insurer
         on the Closing Date. All such tax payments shall be made by certified
         or bank check payable directly to the order of the

                                      -30-


         appropriate governmental officer, or in such manner as the Title
         Insurer shall reasonably require and accept.

                  (iv)    In the event that any taxing authority shall commence
         or file, or threaten to commence or file, any lawsuit or proceeding,
         which pending or threatened lawsuit or proceeding may result in any
         loss, liability or damage subject to indemnification under Section
         9(b)(ii) above (collectively, a "Transfer Tax Proceeding"), then
         Purchaser will give prompt written notice of such Transfer Tax
         Proceeding to Seller (a "Notice of Transfer Tax Proceeding"), and
         Seller shall have the right, upon written notice to Purchaser, within
         thirty (30) days of receipt of such Notice of Transfer Tax Proceeding,
         to undertake the defense thereof by tax representatives chosen by
         Seller and approved by Purchaser (which approval shall not be
         unreasonably withheld or delayed). If Seller gives written notice that
         Seller accepts responsibility to contest, and/or defend Purchaser
         against, such Transfer Tax Proceeding within thirty (30) days of
         receipt of a Notice of Transfer Tax Proceeding, (i) Seller shall be
         obligated to diligently contest, and/or defend Purchaser against, such
         Transfer Tax Proceeding at Seller's own expense, and to keep Purchaser
         apprised of the current status of such Transfer Tax Proceeding at all
         times (except to the extent the attorney-client privilege would be
         violated), (ii) Seller will not be liable to Purchaser for separate
         legal or other expenses incurred by Purchaser in connection with such
         contest and/or defense, (iii) Purchaser shall cooperate in all
         reasonable respects with Seller in the contest and/or defense of such
         Transfer Tax Proceeding, and shall promptly send to Seller copies of
         any documents received by Purchaser which relate to such Transfer Tax
         Proceeding and (iv) Purchaser shall have the right, but not the
         obligation to retain separate tax representatives at Purchaser's own
         cost and expense and (provided the attorney-client privilege would not
         be violated) to attend meetings (including, without limitation, with
         the taxing authority and the tax representatives retained by Seller)
         and to otherwise monitor the Transfer Tax Proceeding. Notwithstanding
         the foregoing limitation, Seller agrees that neither Seller nor its tax
         representatives will withhold, because of the attorney-client privilege
         or work product immunity, from Purchaser or its tax representatives any
         relevant information received by Seller or its tax representatives
         from, or delivered by Seller or its tax representatives to, the New
         York City and New York State taxing authorities. If Seller, within
         thirty (30) days after receipt of any Notice of Transfer Tax
         Proceeding, fails to elect in writing to contest, and/or defend
         Purchaser against, any such Transfer Tax Proceeding, or if Seller
         defaults in its obligation to diligently contest, and/or defend
         Purchaser against, any such Transfer Tax Proceeding at any time
         subsequent to Seller's acceptance of such obligation, and if such
         failure or such default shall continue for five (5) business days after
         notice by Purchaser to Seller thereof, Purchaser shall thereafter have
         the right, but not the obligation, to undertake the defense, compromise
         or settlement of such Transfer Tax Proceeding on behalf of Seller, it
         being understood that Seller shall thereafter reimburse Purchaser, upon
         demand, for all costs, expenses and

                                      -31-


         liabilities incurred by Purchaser in connection with such defense,
         compromise or settlement, including, without limitation, reasonable
         attorneys' fees. If and to the extent any liability hereunder has been
         insured through contractual indemnity insurance, the amount available
         for recovery by Purchaser hereunder shall be reduced by such amounts as
         are recovered and received by Purchaser through such insurance.

         (c) FIRPTA COMPLIANCE. Seller shall comply with the provisions of
Section 1445 of the Code, or any successor or similar law.

         (d) 1099 COMPLIANCE. Seller and Purchaser shall execute, acknowledge
and deliver to the other party such instruments, and take such other actions, as
such other party may reasonably request in order to comply with Section 6045(e)
of the Code, as amended, or any successor provision or any regulations
promulgated pursuant thereto, insofar as the same requires reporting of
information in respect of real estate transactions. The parties designate the
Title Insurer as the responsible party for reporting this information as
required by law.

         (e) SURVIVAL. The provisions of this Section 9 shall survive the
Closing for a period without expiration.

         10. CLOSING DATE DELIVERIES.

         (a) SELLER'S DELIVERIES: Seller shall, pursuant to the provisions of
this Agreement, deliver or cause to be delivered to Purchaser on the Closing
Date the following items:

                  (i)     a bargain and sale deed for the Unit with covenants
         against grantor's acts and otherwise in accordance with all
         requirements of the Condominium Declaration and applicable law (the
         "Unit Deed"), in the form attached hereto as Exhibit L.

                  (ii)    a bill of sale covering the personal property at the
         Unit in the form attached hereto as Exhibit M (the "Bill of Sale");

                  (iii)   at Purchaser's request, an assignment or substitution
         of Seller's interest or position in the litigation and proceedings, if
         any, described on Schedule 10(a)(iii) attached hereto;

                  (iv)    a duly executed and sworn Secretary's Certificate
         certifying that the Board of Directors of Seller has duly adopted
         resolutions authorizing the within transaction and an executed and
         acknowledged Incumbency Certificate certifying to the authority of the
         officers of such entity to execute the documents to be delivered by
         such entity on the Closing Date;

                                      -32-


                  (v)     Intentionally Omitted;

                  (vi)    a certificate of Good Standing for Seller from the
         Secretary of State of New York and such other corporate documentation
         of Seller if and to the extent required by the Title Insurer in order
         to insure fee title to the Unit in the manner required by Section 4 of
         this Agreement;

                  (vii)   a "non-foreign person" certification from Seller
         pursuant to Section 1445 of the Code in the form attached hereto as
         Exhibit N (the "FIRPTA Affidavit");

                  (viii)  a resignation by the representative of Seller
         (currently Thomas Zizzi) from the Board of Managers in the form
         attached hereto as Exhibit O;

                  (ix)    evidence of payment in full to the Board of Managers
         of all unpaid Common Charges and Limited Common Charges theretofore
         assessed against the Unit or otherwise payable by Seller under the
         Condominium Declaration;

                  (x)     any bonds, warranties or guarantees, and any licenses
         and permits, which are in any way applicable to the Unit or any part
         thereof in the possession or control of Seller;

                  (xi)    all tenant files, architectural, mechanical or
         electrical plans and specifications, interior floor plans, "as built"
         plans and surveys relating to the Citigroup Center (including, without
         limitation, the construction remedial plans with respect to work
         performed in 1978 with respect to Citigroup Center's system of wind
         braces) and/or any tenant spaces, the construction plans and
         specifications for any improvements located in the Citigroup Center
         (including all Common Elements thereof) as well as all changes thereto,
         in the possession or control of Seller;

                  (xii)   notices to all tenants of the Unit informing them of
         the sale of the Unit to Purchaser in the form attached hereto as
         Exhibit P;

                  (xiii)  a certificate, dated as of the Closing Date, stating
         that the representations and warranties of Seller contained in this
         Agreement are true and correct in all material respects as of the
         Closing Date (except to the extent Seller has identified any such
         representations and warranties which are not, or are then no longer,
         true and correct and the state of facts giving rise to the change do
         not constitute a breach by Seller of its obligations hereunder);

                  (xiv)   all original Leases and all original Contracts with
         respect to the Unit; provided, however, that if an original thereof is
         not in Seller's possession or

                                      -33-


         under Seller's control, Seller shall deliver a copy thereof to
         Purchaser certified to be true and complete;

                  (xv)    all information attributable to Seller's period of
         ownership as is reasonably necessary to enable Purchaser to properly
         bill tenants in the Unit for their respective "Tenant's Share" of real
         estate taxes and operating expenses that may thereafter become due and
         payable under the Leases; provided that if such information is not
         fully available on the Closing Date, Seller shall furnish the same as
         soon as thereafter possible, and in any event within forty-five (45)
         days after the later to occur of (1) the Closing Date or (2) the date
         upon which Seller obtains such information (which obligation shall
         survive the Closing);

                  (xvi)   a certified true and correct copy of the rent roll for
         the Unit, in the form annexed hereto as Schedule 11(a)(xi), dated as of
         a date within ten (10) days of the Closing Date, which rent roll shall
         identify all of the tenants and other occupants (other than subtenants
         of tenants) of the Unit and will accurately set forth as of the date
         thereof, the information contained therein;

                  (xvii)  an estoppel certificate in the form attached to the
         Citibank Lease (with such changes as may be required by Purchaser in
         accordance with Section 24(k) of this Agreement), dated as of the
         Closing Date, duly executed by Seller as the tenant under the Citibank
         Lease which estoppel shall, except as otherwise contemplated by Section
         16 of this Agreement, confirm that as of the Closing Date, Seller has
         taken possession of the space demised under the Citibank Lease and
         shall confirm that Seller is then currently paying the full amount of
         base rent set forth therein (the "Unit Two Citibank Estoppel"),
         together with such estoppel certificates as Seller may have received
         from tenants of the Unit in the form attached hereto as Exhibit W in
         accordance with the provisions of Section 24(k) of this Agreement;

                  (xviii) an estoppel certificate in the form required under the
         Unit One Citibank Lease (with such changes as may be required by an
         assignee or designee of DLIP in accordance with Section 24(k) of this
         Agreement), dated as of the Closing Date, duly executed by Seller as
         the tenant under the Unit One Citibank Lease (the "Unit One Citibank
         Estoppel");

                  (xix)   all letters of credit or other non-cash security
         deposits with respect to the Leases, subject to and in accordance with
         the provisions of Section 6(c);

                  (xx)    an ICIP amended application form and/or such other
         documentation as is reasonably necessary to transfer the ICIP tax
         exemption applicable to the Unit, to the extent the same is
         transferrable;

                                      -34-


                  (xxi)   Intentionally Omitted;

                  (xxii)  Intentionally Omitted;

                  (xxiii) the consent of the Church to the assignment and
         assumption of the Church Lease contemplated by Section 10(c)(ix);

                  (xxiv)  any affidavits, certifications, proofs or similar
         documents addressing matters reasonably requested by the Title Insurer
         in connection with the Closing or the issuance of title insurance to
         Purchaser or its permitted assignee or designee; and

                  (xxv)   such other documents as may be reasonably necessary or
         appropriate to effect the consummation of the transactions that are the
         subject of this Agreement.


         (b) PURCHASER'S DELIVERIES: Purchaser shall, pursuant to the provisions
of this Agreement, deliver or cause to be delivered to Seller on the Closing
Date the following items:

                  (i)     the Purchase Price (as adjusted in accordance with the
         Customary Adjustments set forth in Section 6 and the other adjustments
         set forth in Section 8A) pursuant to Section 2(b) of this Agreement;

                  (ii)    a duly executed and sworn Secretary's Certificate
         certifying that the Board of Directors of Purchaser has duly adopted
         resolutions authorizing the within transaction and an executed and
         acknowledged Incumbency Certificate certifying to the authority of the
         officers of such entity to execute the documents to be delivered by
         such entity on the Closing Date;

                  (iii)   a certified copy of a Certificate of Incorporation or
         other appropriate formation document from Purchaser;

                  (iv)    a certificate of Good Standing for Purchaser from the
         Secretary of State or other appropriate official of the State of
         Purchaser's incorporation or formation and the State of New York, if
         different;

                  (v)     if Purchaser is other than DLIP, an assignment and
         assumption by DLIP and Purchaser of the obligations of DLIP under the
         Master License Agreement;

                  (vi)    if Purchaser is other than DLIP, an assignment and
         assumption by DLIP and Purchaser of the obligations of DLIP under the
         Master Side Letter;

                                      -35-


                  (vii)   if Purchaser is other than DLIP, an assignment and
         assumption by DLIP and Purchaser of the obligations of DLIP under the
         Systems Agreement;

                  (viii)  the Limited Common Area License Agreement;

                  (ix)    a certificate, dated as of the Closing Date, stating
         that the representations and warranties of Purchaser contained in this
         Agreement are true and correct in all material respects as of the
         Closing Date; and

                  (x)     such other documents as may be reasonably necessary or
         appropriate to effect the consummation of the transactions that are the
         subject of this Agreement.

         (c) DOCUMENTS JOINTLY EXECUTED BY SELLER AND PURCHASER: Seller and
Purchaser shall each execute and deliver the following documents:

                  (i)     the City Transfer Tax and State Transfer Tax returns
         provided for in Section 9(b) above (collectively, the "Transfer Tax
         Forms"), to be delivered to the Title Insurer;

                  (ii)    the Citibank Lease;

                  (iii)   a Memorandum of the Citibank Lease, in proper
         statutory form for recording;

                  (iv)    a subordination, non-disturbance and attornment
         agreement among the Board of Managers, Seller, Purchaser and the owner
         of Citigroup Center Office Unit One (if different from Purchaser) in
         the form attached as Exhibit Q to the Citibank Lease (the "Citibank
         SNDA");

                  (v)     the Unit One Citibank Lease Amendment;

                  (vi)    an assignment and assumption of the Leases in the form
         attached hereto as Exhibit R;

                  (vii)   an assignment and assumption of the Construction
         Contracts in the form attached hereto as Exhibit S;

                  (viii)  an assignment and assumption of all other Contracts in
         the form attached hereto as Exhibit T;

                                      -36-


                  (ix)    an assignment and assumption of the Church Lease in
         the form attached hereto as Exhibit U;

                  (x)     the documentation necessary to comply with Section
         9(d) of this Agreement;

                  (xi)    the Master Side Letter;

                  (xii)   Intentionally Omitted;

                  (xiii)  the Lighting Easement; and

                  (xiv)   such other documents as may be reasonably necessary or
         appropriate to effect the consummation of the transactions that are the
         subject of this Agreement.

         11. REPRESENTATIONS, WARRANTIES AND ACKNOWLEDGMENTS.

         (a) REPRESENTATIONS AND WARRANTIES BY SELLER. Seller hereby represents,
warrants and covenants to Purchaser as of the date hereof that:

                  (i)     Seller is a national banking association, duly
         organized, validly existing under the laws of the United States of
         America;

                  (ii)    Seller has the legal right, power and authority to
         enter into this Agreement and perform all of its obligations hereunder,
         and the execution and delivery of this Agreement and the performance by
         Seller of its obligation hereunder, (x) has been duly authorized, and
         (y) will not conflict with, or result in a breach of, any of the terms,
         conditions and provisions of its organizational and governance
         documents or any law, statute, rule or regulation, or order, judgment,
         writ, injunction or decree of any court or governmental
         instrumentality, or any contract, agreement or instrument to which it
         is a party or by which it is bound, or to which it or any portion of
         its property is subject and (z) will not require the consent, approval,
         authority or order of any court or governmental agency that has not
         been previously obtained in writing or delivered to Purchaser;

                  (iii)   there is no litigation, and there are no governmental
         or administrative proceedings or arbitrations presently pending or
         threatened in writing with respect to the Unit or, to Seller's
         Knowledge, the Condominium that if successful could adversely affect
         the rights or obligations of Seller or Purchaser to the Unit, including
         its interest in the Common Elements (exclusive of the proceedings, if
         any, set forth on Schedule

                                      -37-


         11(a)(iii) hereto). Purchaser shall have no liability under, or any
         obligation to pursue, such litigation or proceedings, except to the
         extent required under Section 8A hereof;

                  (iv)    Seller has not received written notice of any pending
         condemnation, eminent domain or similar proceedings with respect to the
         Unit, except for the proceedings described on Schedule 11(a)(iv)
         attached hereto, and to Seller's Knowledge, no such proceedings are
         threatened or contemplated. Seller has received no written notice of
         any plan, study or effort by any governmental authority or agency that
         in any way adversely affects or would adversely affect the present use
         or zoning of the Unit, except as may be set forth in Schedule 11(a)(iv)
         attached hereto, and to Seller's Knowledge no such plans, study or
         effort is being contemplated;

                  (v)     except for the right of first offer to purchase the
         Unit in favor of Purchaser (which right has been or is being waived by
         Purchaser contemporaneously herewith), there are no unrecorded rights
         of first offer to purchase, rights of first refusal to purchase,
         purchase options or similar purchase rights or contractually required
         consents to transfer pertaining to the Unit which would be breached by
         this Agreement or the consummation of the transactions provided for
         herein;

                  (vi)    the fixtures, furniture, furnishings, equipment,
         machinery and other personal property attached to, appurtenant to or
         located on the Unit (other than personal property owned or leased by
         tenants or any property manager) have been fully paid for and are owned
         by Seller free and clear of all liens and encumbrances;

                  (vii)   there are no direct employees of Seller working at the
         Unit (including, without limitation, security personnel) whose
         employment will be required to be transferred to Purchaser as a result
         of the transactions contemplated by this Agreement;

                  (viii)  to Seller's Knowledge, all monetary obligations with
         respect to the installation of any utilities servicing the Unit,
         including all connection, hook-up and tap fees, have been satisfied.
         Seller has received no written notice of any default with respect to
         any of its obligations concerning such utilities. Seller has not
         received notice, and to Seller's Knowledge there are no threats, of any
         curtailment of utility services to the Unit or any part thereof;

                  (ix)    a true and complete list of the Protest Proceedings,
         if any, and the law firms or consultants representing Seller with
         respect thereto, and descriptions of the fee arrangements with such law
         firms and consultants are attached hereto as Schedule 11(a)(ix). Seller
         has not received any notice of any increase in the assessed valuation
         of the Unit (as it pertains to real, personal or other taxes payable
         with respect to the Unit) or the real estate or personal property taxes
         payable in respect thereof. There are no special assessments
         outstanding with regard to the Unit. Seller has provided Purchaser

                                      -38-


         with true and correct copies of all agreements and documentation
         pertaining to (i) the applicability of the ICIP tax abatement to the
         Unit and (ii) to the extent applicable, the transferability of the
         benefits of such tax abatement to Purchaser at the Closing;

                  (x)     Schedule 11(a)(x)(1) contains a true and complete
         description of the Existing Leases and Schedule 11(a)(x)(2) contains a
         true and complete description of the Contracts. Seller has delivered,
         or otherwise made available, to Purchaser true and complete copies of
         all documents comprising the Existing Leases and the Contracts and all
         other reports, information and correspondence relating to the Unit in
         the possession of Seller and/or any property manager retained by Seller
         for the management of the Unit, including, without limitation, books
         and records, tenant files, budgets and third-party reports. Seller
         acknowledges and agrees that Purchaser shall have the right to cause
         Seller to terminate, effective as of the Closing Date, any Contracts
         designated by Purchaser in a written notice given to Seller not less
         than forty-five (45) days prior to the Closing provided that such
         Contracts may be terminated on thirty (30) days' notice or less;

                  (xi)    the rent roll attached hereto as Schedule 11(a)(xi) is
         true and complete in all material respects as of the date hereof. To
         Seller's Knowledge, there exists no uncured material default under any
         Lease on the part of any tenant except for past due rents specified on
         Schedule 11(a)(xi). All security or other deposits paid prior to the
         date hereof with respect to the Leases are accurately specified on
         Schedule 11(a)(xi). Except as disclosed on Schedule 11(a)(xi), Seller
         has not received any written notice in which any tenant has asserted
         any defense, setoff or counterclaim with respect to its tenancy or its
         obligations under its Lease;

                  (xii)   there are no Leasing Commissions or Tenant Allowances
         now or hereafter payable by the landlord of the Unit with respect to
         the current or any renewal term of, or the exercise of expansion rights
         by tenants under, or upon the failure by any tenant to exercise any
         option to cancel, any of the Leases other than those set forth on
         Schedules 6(f)(i) and 6(f)(ii) attached hereto. There are no written
         promises, understandings or commitments in effect with respect to the
         leasing, occupancy or ownership of the Unit other than those contained
         in the Leases and written agreements with respect to the Leasing
         Commissions;

                  (xiii)  Seller has not received any written notice with
         respect to a default by Seller under any of the Existing Leases, the
         Contracts or the Condominium Declaration and, to Seller's knowledge,
         Seller is not in default under any of the foregoing;

                  (xiv)   none of the Leases or rents thereunder has been, or at
         the time of Closing will have been, assigned, pledged, hypothecated or
         otherwise encumbered by

                                      -39-


         Seller. Except as set forth on Schedule 11(a)(xiv), no rent has been,
         or at the time of Closing will have been, prepaid under any of the
         Leases;

                  (xv)    Schedule 11(a)(xv) contains a list of all insurance
         policies (other than title insurance policies) currently maintained by
         Seller with respect to the Unit;

                  (xvi)   Seller is not a "foreign person" within the meaning of
         Section 1445(f)(3) of the Internal Revenue Code of 1986;

                  (xvii)  this Agreement constitutes, and when duly executed and
         delivered by Seller, any and all documents, instruments and agreements
         contemplated hereunder to be executed and delivered by Seller will
         constitute, the valid and binding obligations of Seller, enforceable in
         accordance with their respective terms, except as such enforcement may
         be limited by bankruptcy laws and other laws or equitable principles
         affecting the rights of contracting parties generally;

                  (xviii) Seller has not received any notice, with which it has
         not complied, from any governmental entity or agency having
         jurisdiction over the Unit to the effect that the improvements
         comprising the Unit or the present use of the Unit fail to comply, in
         any material respect, with any applicable legal requirements with
         regard to the use and occupancy thereof (including, without limitation,
         zoning and building laws and ordinances, environmental protection laws
         and other similar rules, regulations and orders of any governmental
         entity or agency having jurisdiction over the Unit) or with any
         requirements with respect to any building, occupancy or other permit,
         license or approval of any such governmental entity or agency with
         respect to the Unit except as set forth in Schedule 11(a)(xviii)(1).
         Schedule 11(a)(xviii)(2) contains a complete list of all zoning, use or
         similar agreements between Seller and any governmental or
         quasi-governmental entities or agencies that affect the Unit or the
         Common Elements or any portion of either of them;

                  (xix)   to Seller's Knowledge, all licenses, permits and
         approvals, if any, necessary in connection with the use or occupancy of
         the Unit have been, and at the time of Closing will have been, obtained
         and are, and will then be, in full force and effect;

                  (xx)    no unused transferable development rights appurtenant
         to the Unit have been assigned or transferred to any other person or
         entity by Seller;

                  (xxi)   to Seller's Knowledge, Seller is in compliance with
         all of the rules, regulations and requirements promulgated by the NYCDF
         under the ICIP relating to

                                      -40-


         ICIP Application Numbers 4066 and 6052, which are the only ICIP
         Application Numbers pertaining to the ICIP tax exemption applicable to
         the Unit; and

                  (xxii)  Seller does not have any ownership interest in any
         building systems or equipment located in the Common Elements other than
         such interests as may have been created pursuant to the Master License
         Agreement.

         (b) REPRESENTATIONS AND WARRANTIES BY PURCHASER. Purchaser hereby
represents, warrants and covenants to Seller as of the date hereof that:

                  (i)     Purchaser is a corporation duly organized, validly
         existing and in good standing under the laws of the State of Delaware
         or, if this Agreement is assigned pursuant to Section 20(a), Purchaser
         is duly organized, validly existing and in good standing under the laws
         of the state of its formation;

                  (ii)    Purchaser has the legal right, power and authority to
         enter into this Agreement and perform all of its obligations hereunder,
         and the execution and delivery of this Agreement and the performance by
         Purchaser of its obligations hereunder, (x) has been duly authorized,
         and (y) will not conflict with, or result in a breach of, any of the
         terms, conditions and provisions of its organizational and governance
         documents or any law, statute, rule or regulation, or order, judgment,
         writ, injunction or decree of any court or governmental
         instrumentality, or any contract, agreement or instrument to which it
         is a party or by which it is bound, or to which it or any portion of
         its property is subject and (z) will not require the consent, approval,
         authority or order of any court or governmental agency that has not
         been previously obtained in writing or delivered to Seller; and

                  (iii)   this Agreement constitutes, and when duly executed and
         delivered by Purchaser, any and all documents, instruments and
         agreements contemplated hereunder to be executed and delivered by
         Purchaser will constitute, the valid and binding obligations of
         Purchaser, enforceable in accordance with their respective terms,
         except as such enforcement may be limited by bankruptcy laws and other
         laws or equitable principles affecting the rights of contracting
         parties generally.

         (c) REPRESENTATIONS NOT CONDITIONS TO CLOSING. The representations and
warranties set forth herein above and all other representations and warranties
contained in this Agreement shall be true and correct in all material respects
as of the Closing Date (except to the extent any such representations and
warranties expressly relate to an earlier date and with such changes as are
permitted under, or result by reason of the effect of, this Agreement); it being
agreed, however, that if any of such representations and warranties shall not be
true and correct in all material respects as of the Closing Date, same shall not
(except to the extent otherwise provided herein) be conditions precedent to
closing the transactions contemplated

                                      -41-


herein (and the parties shall continue to be absolutely and unconditionally
obligated to consummate the transactions contemplated under this Agreement), but
the non-breaching party's sole rights and remedies with respect to such breach
shall be as set forth in the succeeding subsection.

         (d) DAMAGES FOR BREACH OF REPRESENTATIONS. In the event of a material
breach with respect to any representation or warranty made by Seller or
Purchaser under this Agreement, the non-breaching party shall be entitled to
pursue a claim with respect to such breach if and only if (i) written notice of
such breach is given to the breaching party on or prior to the expiration of the
applicable Survival Period (as hereinafter defined) for such breach, which
notice must contain a reasonably detailed description of the facts relating to
the claimed breach and (ii) the liability and losses arising out of such breach,
when aggregated with all other breaches, if any, of representations and
warranties under this Agreement, shall exceed $2,000,000. For purposes of this
Section 11(d), "Survival Period" shall mean: with respect to the representations
and warranties in Sections 11(a)(i), (ii), (xvi) and (xvii) and 11 (b)(i), (ii)
and (iii), a period without expiration, and with respect to all other
representations and warranties, a period of one (1) year commencing on the day
following the Closing Date. The provisions of this Section 11(d) shall survive
the Closing.

         (e) ACKNOWLEDGMENTS OF PURCHASER. Purchaser acknowledges and agrees for
the benefit of Seller that:

                  (i)     EXCEPT AS OTHERWISE EXPRESSLY STATED IN THIS AGREEMENT
         OR IN ANY AGREEMENT OR INSTRUMENT EXECUTED AND DELIVERED BY SELLER TO
         PURCHASER CONTEMPORANEOUSLY HEREWITH, INCLUDING BUT NOT LIMITED TO
         REPRESENTATIONS AND WARRANTIES SET FORTH IN SECTION 11 OF THIS
         AGREEMENT AND THE LIMITED WARRANTY OF TITLE EXPRESSLY SET FORTH IN THE
         UNIT DEED (HEREINAFTER COLLECTIVELY REFERRED TO IN THIS SECTION 11(E)
         AS THE "SURVIVING REPRESENTATIONS"), SELLER HEREBY EXPRESSLY DISCLAIMS
         ANY AND ALL REPRESENTATIONS AND WARRANTIES OF ANY KIND OR CHARACTER,
         EXPRESS OR IMPLIED, WITH RESPECT TO THE UNIT, AND PURCHASER AGREES TO
         ACCEPT THE UNIT "AS IS, WHERE IS, WITH ALL FAULTS". WITHOUT LIMITING
         THE GENERALITY OF THE PRECEDING SENTENCE OR ANY OTHER DISCLAIMER SET
         FORTH HEREIN, SELLER AND PURCHASER HEREBY AGREE THAT, EXCEPT FOR THE
         SURVIVING REPRESENTATIONS, SELLER HAS NOT MADE AND IS NOT MAKING ANY
         REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, WRITTEN OR ORAL, AS
         TO (A) THE NATURE OR CONDITION, PHYSICAL OR OTHERWISE, OF THE UNIT OR
         ANY ASPECT THEREOF, INCLUDING,

                                      -42-


         WITHOUT LIMITATION, ANY WARRANTIES OF HABITABILITY, SUITABILITY,
         MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE OR PURPOSE, OR THE
         ABSENCE OF REDHIBITORY OR LATENT VICES OR DEFECTS IN THE UNIT, (B) THE
         NATURE OR QUALITY OF CONSTRUCTION, STRUCTURAL DESIGN OR ENGINEERING OF
         THE IMPROVEMENTS OR THE STATE OF REPAIR OR LACK OR REPAIR OF ANY OF THE
         IMPROVEMENTS, (C) THE QUALITY OF THE LABOR OR MATERIALS INCLUDED IN THE
         IMPROVEMENTS, (D) THE SOIL CONDITIONS, DRAINAGE CONDITIONS,
         TOPOGRAPHICAL FEATURES, ACCESS TO PUBLIC RIGHTS-OF-WAY, AVAILABILITY OF
         UTILITIES OR OTHER CONDITIONS OR CIRCUMSTANCES WHICH AFFECT OR MAY
         AFFECT THE UNIT OR ANY USE TO WHICH THE UNIT MAY BE PUT, (E) ANY
         CONDITIONS AT OR WHICH AFFECT OR MAY AFFECT THE UNIT WITH RESPECT TO
         ANY PARTICULAR PURPOSE, USE, DEVELOPMENT POTENTIAL OR OTHERWISE, (F)
         THE AREA, SIZE, SHAPE, CONFIGURATION, LOCATION, CAPACITY, QUANTITY,
         QUALITY, CASH FLOW, EXPENSES OR VALUE OF THE UNIT OR ANY PART THEREOF,
         (G) THE NATURE OR EXTENT OF TITLE TO THE UNIT, OR ANY EASEMENT,
         SERVITUDE, RIGHT-OF-WAY, POSSESSION, LIEN, ENCUMBRANCE, LICENSE,
         RESERVATION, CONDITION OR OTHERWISE THAT MAY AFFECT TITLE TO THE UNIT,
         (H) ANY ENVIRONMENTAL, GEOLOGICAL, STRUCTURAL, OR OTHER CONDITION OR
         HAZARD OR THE ABSENCE THEREOF HERETOFORE, NOW OR HEREAFTER AFFECTING IN
         ANY MANNER THE UNIT, INCLUDING BUT NOT LIMITED TO, THE PRESENCE OR
         ABSENCE OF ASBESTOS OR ANY ENVIRONMENTALLY HAZARDOUS SUBSTANCE ON, IN,
         UNDER OR ADJACENT TO THE UNIT, (I) THE COMPLIANCE OF THE UNIT OR THE
         OPERATION OR USE OF THE UNIT WITH ANY APPLICABLE RESTRICTIVE COVENANTS,
         OR WITH ANY LAWS, ORDINANCES OR REGULATIONS OF ANY GOVERNMENTAL BODY
         (INCLUDING SPECIFICALLY, WITHOUT LIMITATION, ANY ZONING LAWS OR
         REGULATIONS, ANY BUILDING CODES, ANY ENVIRONMENTAL LAWS, AND THE
         AMERICANS WITH DISABILITIES ACT OF 1990, 42 U.S.C. 12101 ET SEQ.). THE
         PROVISIONS OF THIS SECTION 11(E) SHALL BE BINDING ON PURCHASER AND
         SHALL SURVIVE THE CLOSING.

                  (ii)    PURCHASER HAS BEEN GIVEN THE OPPORTUNITY TO INSPECT
         THE UNIT, AND THE EXISTING LEASES, THE CONTRACTS AND OTHER MATERIALS
         (INCLUDING, WITHOUT LIMITATION, TITLE MATERIALS AND FINANCIAL REPORTS)
         RELATING TO THE UNIT THAT PURCHASER DEEMED NECESSARY TO INSPECT AND
         REVIEW IN

                                      -43-


         CONNECTION WITH THE TRANSACTION CONTEMPLATED BY THIS AGREEMENT, AND
         PURCHASER HAS RETAINED SUCH ENVIRONMENTAL CONSULTANTS, STRUCTURAL
         ENGINEERS AND OTHER EXPERTS AS IT DEEMED NECESSARY TO INSPECT THE UNIT
         AND REVIEW SUCH MATERIALS. PURCHASER IS RELYING ON ITS OWN
         INVESTIGATION AND THE ADVICE OF ITS EXPERTS REGARDING THE UNIT, AND
         UPON ITS REVIEW OF EXISTING LEASES, CONTRACTS, AND OTHER MATERIALS, AND
         NOT ON ANY REPRESENTATIONS OR WARRANTIES OF SELLER (OTHER THAN THE
         SURVIVING REPRESENTATIONS). PURCHASER ACKNOWLEDGES THAT SELLER MAKES
         ABSOLUTELY NO REPRESENTATIONS OR WARRANTIES WITH RESPECT TO THE
         ACCURACY OR COMPLETENESS OF ANY INFORMATION, REPORTS OR OTHER MATERIALS
         DELIVERED TO PURCHASER EXCEPT AS MAY BE EXPRESSLY SET FORTH IN THE
         SURVIVING REPRESENTATIONS.

         12. CONDITIONS PRECEDENT TO CLOSING.

         (a) The obligation of Purchaser to consummate the transactions
hereunder shall be contingent upon (i) Seller's delivery of the documents and
instruments required to be delivered by Seller pursuant to Section 10(a) of this
Agreement, (ii) the simultaneous closing of the transaction under the Other
Agreement, and (iii) Seller not being the subject of any pending voluntary or
involuntary reorganization, liquidation, receivership or other insolvency
proceedings under any federal, state, foreign or local bankruptcy, insolvency,
liquidation, reorganization or similar type laws.

         (b) The obligation of Seller to consummate the transactions hereunder
shall be contingent upon (i) Purchaser's delivery of the Purchase Price and the
documents and instruments required to be delivered by Purchaser pursuant to
Section 10(b) of this Agreement, (ii) the simultaneous closing of the
transaction under the Other Agreement, and (iii) Purchaser not being the subject
of any pending voluntary or involuntary reorganization, liquidation,
receivership or other insolvency proceedings under any federal, state, foreign
or local bankruptcy, insolvency, liquidation, reorganization or similar type
laws.

         (c) Each of Seller and Purchaser expressly acknowledges and agrees
that, subject to satisfaction of the conditions set forth in subsections (a) and
(b) above and subject to the provisions of Sections 16, 17 and 18, (i) it is
absolutely and unconditionally obligated to fulfill its respective obligation to
convey and acquire the Unit in the manner contemplated by this Agreement, (ii)
it is absolutely and unconditionally obligated to otherwise close the
transactions in the time and manner contemplated by this Agreement and (iii)
this Agreement is not subject to any conditions or contingencies.

                                      -44-


         (d) Seller acknowledges that JLL will on behalf of Purchaser promptly
after the execution of this Agreement seek bids from third parties for the
acquisition of the Unit and the other unit contained in Citigroup Center which
is owned by Purchaser and referred to as "Citigroup Center Office Unit One" in
the Condominium Declaration, it being agreed that a closing of the transactions
contemplated hereby on or before April 1, 2002 shall in no event or under any
circumstances be conditioned or contingent upon Purchaser arranging for a third
party purchaser of the Unit and/or Citigroup Center Office Unit One.
Notwithstanding the foregoing, Seller shall reasonably cooperate with DLIP and
provide a prospective assignee or designee of Purchaser's rights under this
Agreement access to the Unit, accompanied by a representative of Seller, on
reasonable notice during normal business hours including access to lease files
for due diligence, without limitation, Seller's files containing the items
described in clauses (x), (xi) and (xiv) of Section 10(a) for due diligence
purposes.

         13. CLOSING DATE.

         Purchaser shall have the right, subject to the provisions of this
Section, to set the Closing Date. Purchaser shall furnish Seller not less than
fifteen (15) business days' prior notice of the date on which the Closing is to
occur, it being agreed that such date shall in no event be later than April 1,
2002, TIME BEING OF THE ESSENCE in any and all circumstances. If for any reason
such notice is not delivered on or before March 15, 2002 or if the Closing does
not occur on or before March 31, 2002, then the Closing shall occur on April 1,
2002, TIME BEING OF THE ESSENCE in any and all circumstances with respect to
such April 1, 2002 Closing Date. Without limitation of the immediately preceding
sentence, the Closing Date may be postponed in certain circumstances by Seller
pursuant to Section 16(b) of this Agreement. The Closing of the transactions
contemplated hereby shall take place at 10:00 A.M. on the Closing Date, at the
offices of Paul, Hastings, Janofsky & Walker LLP, 75 East 55th Street, New York,
New York 10022 or, if Purchaser is a person or party other than DLIP, at the
offices of such purchaser's lender or such lender's counsel.

         14. VIOLATIONS.

         (a) Except as provided in Section 14(b) below, all notices of
violations of laws or governmental ordinances, rules, regulations, orders or
requirements (collectively, "Laws") issued by any governmental authority having
jurisdiction over the Unit and that relate to the period of time prior to the
Closing Date shall be the responsibility of Seller irrespective of whether or
not notices of such violations are issued or noted prior to the Closing Date and
irrespective of whether or not actually received by Seller prior to the Closing
Date. Any such notices of violations that are actually received by Seller prior
to the Closing Date shall be removed or complied with by Seller on or before the
Closing Date. Notwithstanding the foregoing provisions of this Section 14(a) to
the contrary, if such removal or compliance has not been completed on or before
the Closing Date, Seller may elect to either (i) deliver an undertaking to
Purchaser at Closing to diligently cause such violations to be removed
post-

                                      -45-


Closing or (ii) pay to Purchaser at the Closing (or credit Purchaser at Closing
as an adjustment to the Purchase Price payable to Seller pursuant to Section 3
of this Agreement) an amount sufficient, in the reasonable judgment of Seller
and Purchaser, to pay for the performance of the work and provision of the
materials necessary to effect or complete such removal or compliance, and upon
Seller making such payment or giving such credit, Purchaser shall be required to
accept title to the Unit subject to such notices of violations and (except for
notices of violations of Laws that are issued by any governmental authority
having jurisdiction over the Unit and that relate to the period of time prior to
the Closing Date but are not actually received by Seller prior to the Closing
Date) Seller shall have no further obligation to remove or comply with such
notices of violations. Purchaser shall deliver to Seller copies of any notices
of violations of Laws that are issued by any governmental authority having
jurisdiction over the Unit that are received by Purchaser after the Closing Date
but that relate to the period of time prior to the Closing Date and Seller
shall, subject to the provisions of this Section 14, diligently cause such
notices to be removed or complied with.

         (b) Notwithstanding anything in this Section 14 to the contrary, Seller
shall not be obligated to remove or comply with any notices of violations to the
extent such notices relate to any of the following violations:

         (i)  Any violation which is the obligation of any tenant or other
         occupant under a Lease in effect at the Closing (other than Seller) to
         remedy, it being understood that, until the Closing Date, Seller shall
         use commercially reasonable good faith efforts to cause such tenant or
         other occupant to remedy the same; and

         (ii) Any violations relating to the sidewalks abutting Citigroup Center
         or relating to the Common Elements (except to the extent that such
         violations relate to exterior signage or matters within the reasonable
         control of Seller provided that Purchaser cooperates with Seller in
         connection therewith to the extent reasonably requested by Seller), it
         being understood that, until the Closing Date, Seller and Purchaser
         shall cooperate with each other and shall use their commercially
         reasonable good faith efforts to cause the Board of Managers to remedy
         the same.

Purchaser shall accept title to the Unit subject to all violations not required
to be removed pursuant to this Section 14.

         (c) The provisions of this Section 14 shall survive the Closing for a
period of two (2) years.


         15. NOTICES.

                                      -46-


         All notices, demands, requests, approvals or other communications
("notices") required to be given or which may be given hereunder shall be in
writing and shall be given by personal delivery with receipt acknowledged or by
United States registered or certified mail, return receipt requested, postage
prepaid or by Federal Express or other reputable national overnight courier
service, and shall be deemed given when received or refused at the following
addresses:

         If to Purchaser:

               Dai-Ichi Life Investment Properties, Inc.
               399 Park Avenue, 24th Floor
               New York, New York 10022
               Attention: Mr. Hitoshi Yamauchi

         With copies to:

               O'Melveny & Myers LLP
               One Citigroup Center
               153 East 53rd Street
               New York, New York 10022
               Attention: Jacqueline A. Weiss, Esq.

               LaSalle Investment Management, Inc.
               399 Park Avenue, 24th Floor
               New York, New York 10022
               Attention: Mr. Anthony C. O'Malley

         If to Seller:

               Citigroup
               1 Sansome Street
               7th Floor
               San Francisco, California 94101
               Attention: Mr. David Cumming

         With copies to:

               Citigroup
               One Court Square
               8th Floor
               Long Island City, New York 11120
               Attention: Ms. Leslie Heifetz

                                      -47-


         and

               Citigroup
               599 Lexington Avenue
               New York, New York 10022
               Attention: Michael Broido, Esq.

         and

               Paul, Hastings, Janofsky & Walker LLP
               75 East 55th Street
               New York, New York 10022
               Attention: Dean A. Stiffle, Esq.

Each party may designate a change of address (or additional or substitute
parties for notice) by notice to the other party, given at least fifteen (15)
days before such change of address is to become effective.

         16. CASUALTY.

         (a) If, between the date hereof and the Closing, there shall occur a
fire or other casualty resulting in the damage or destruction of fifty percent
(50%) or more of the floor space of Citigroup Center (a "Major Casualty"),
Purchaser shall have the right, exercisable by giving written notice to Seller
within ten (10) days after receiving written notice of such fire or other
casualty, to terminate this Agreement, in which case neither party shall have
any further rights or obligations hereunder except such obligations which
expressly survive the termination of this Agreement. If, between the date hereof
and the Closing, there shall occur a fire or other casualty affecting all or any
part of the Unit or any other portion of Citigroup Center other than a Major
Casualty, neither Seller nor Purchaser shall (except as specifically provided to
the contrary in subsection (b) below) have the right to terminate this
Agreement, and in such event, or in the event of a Major Casualty as to which
Purchaser shall not exercise the termination option contained in the first
sentence of this subsection, then (i) the parties shall proceed to Closing
without reduction of or offset against any amounts payable hereunder or any
other claim against the other, (ii) at the Closing, Seller shall (x) pay over to
Purchaser the proceeds of any insurance collected by Seller less the amount of
all costs incurred by Seller in connection with the repair of such damage or
destruction, all of which costs incurred by Seller shall be a Purchaser Consent
Action and (y) assign and transfer to Purchaser, subject to the terms of the
Condominium Declaration, all right, title and interest of Seller in and to any
uncollected insurance proceeds which Seller may be entitled to receive from such
damage or destruction and (iii) the parties hereto shall cooperate in all
reasonable respects in order to

                                      -48-


effectuate such intent. The provisions of this Section 16 shall survive the
Closing for a period without expiration.

         (b) In addition to and supplementing the provisions of subsection (a)
above, the following provisions of this subsection shall be applicable if a fire
or other casualty resulting in the damage or destruction of the Unit shall occur
between the date hereof and the Closing (whether or not such fire or other
casualty constitutes a Major Casualty):

                  (i)     If more than 44.4% of the Citibank Leased Premises
         (i.e., 195,000 rentable square feet) is damaged or destroyed and if the
         estimated period (the "Estimated Repair Period") for the completion of
         the required repair and restoration of the Unit, as determined in
         accordance with the provisions of subsection (b)(vi) below, exceeds 720
         days from the Casualty Repair Period Commencement Date (as hereinafter
         defined), Seller shall have the absolute and unconditional right at its
         option to terminate this Agreement by notice given to Purchaser not
         later than fifteen (15) business days after the Estimated Repair Period
         is so determined. If the damage or destruction of the Unit occurs prior
         to the Breakpoint Date (as hereinafter defined), the "Casualty Repair
         Period Commencement Date" shall, for the purposes of this subsection
         (b), be the earlier to occur of the Breakpoint Date or the Closing
         Date, and if the damage or destruction shall occur on or subsequent to
         the Breakpoint Date, the "Casualty Repair Period Commencement Date"
         shall, for the purposes of this subsection (b), be the date upon which
         the damage or destruction shall have occurred. The term "Breakpoint
         Date", as used in this subsection (b), shall mean July __, 2001.

                  (ii)    If more than 44.4% of the Citibank Leased Premises
         (i.e., 195,000 rentable square feet) is damaged or destroyed and if the
         Estimated Repair Period, as determined in accordance with the
         provisions of this subsection hereinafter set forth, exceeds 720 days
         from the Casualty Repair Period Commencement Date, but Seller does not
         elect to terminate this Agreement pursuant to subsection (b)(i) above,
         and if this Agreement is not otherwise terminated by Purchaser in
         accordance with the provisions of subsection (a) above, this Agreement
         shall remain in full force and effect, and Seller shall (except as
         otherwise expressly provided to the contrary in subsection (v) below)
         be absolutely and unconditionally obligated to execute and deliver the
         Citibank Lease on the Closing Date in accordance with the provisions of
         this Agreement irrespective of whether the required repair and
         restoration of the Unit have been completed as of the Closing Date.

                  (iii)   If Seller does not have the right to terminate this
         Agreement because less than 44.4% (i.e., 195,000 rentable square feet)
         of the Citibank Leased Premises is damaged or destroyed, or if more
         than 44.4% (i.e., 195,000 rentable square feet) of the Citibank Leased
         Premises is damaged or destroyed, but Seller does not have the right to
         terminate this Agreement because the Estimated Repair Period is equal
         to or

                                      -49-


         less than 720 days, and if this Agreement is not otherwise terminated
         by Purchaser in accordance with the provisions of subsection (a) above,
         this Agreement shall remain in full force and effect, and Seller shall
         (except as otherwise expressly provided to the contrary in subsection
         (v) below) be absolutely and unconditionally obligated to execute and
         deliver the Citibank Lease on the Closing Date in accordance with the
         provisions of this Agreement irrespective of whether the required
         repair and restoration of the Unit have been completed as of the
         Closing Date.

                  (iv)    If the Unit and/or Citigroup Center is damaged or
         destroyed by fire or other casualty between the date hereof and the
         Closing, and if this Agreement is not terminated in accordance with the
         provisions of subsection (a) or subsection (b) set forth above, and if
         the required repair and restoration of the Unit have not been completed
         as of the Closing Date, the rights and obligation of Citibank under the
         Citibank Lease shall, without further act or instrument, be deemed
         modified and qualified as follows until such time as the required
         repairs and restoration of the Unit shall have been completed in
         accordance with the provisions of this Section hereinafter set forth:

                           (1) Notwithstanding anything to the contrary set
                  forth in the Citibank Lease, including, without limitation,
                  Section IX of the Citibank Lease, neither the Base Rent nor
                  the Additional Rent (as defined in the Citibank Lease) shall
                  be abated with respect to the portion of the Unit so damaged
                  or destroyed, it being the intent that Seller shall be
                  obligated to pay Base Rent and Additional Rent with respect to
                  all of the Unit, including without limitation, the portions
                  thereof which have been so damaged or destroyed.

                           (2) Notwithstanding anything to the contrary
                  contained in the Citibank Lease, Seller shall not have any
                  further right to terminate the Citibank Lease as a result of
                  the occurrence of any such fire or other casualty prior to the
                  date of the Closing.

                  (v)     Notwithstanding anything to the contrary set forth
         above in this Section 16 or elsewhere in this Agreement, if the Unit
         and/or Citigroup Center is damaged or destroyed by fire or other
         casualty prior to the Closing, and if this Agreement is not terminated
         in accordance with the provisions of subsection (a) or this subsection
         (b) above, and if the required repair and restoration of the Unit have
         not been completed as of the date upon which the Closing has been
         scheduled by Purchaser in accordance with the provisions of Section 13
         of this Agreement, Seller shall (except as specifically provided to the
         contrary in the next sentence of this subsection) have the absolute and
         unconditional right at its option, by written notice given to Purchaser
         on or prior to the date such Closing has been scheduled to occur, to
         postpone the Closing until the earlier to occur of the date upon which
         the required repair and restoration

                                      -50-


         shall have been completed in accordance with the standards set forth in
         subsection (iv)(2) above or April 1, 2002. If three floors or less of
         the Unit shall have been damaged or destroyed by fire or other
         casualty, Seller shall not have the right pursuant to the preceding
         sentence of this subsection to postpone a Closing which has been
         scheduled by Purchaser in accordance with the provisions of Section 13
         of this Agreement. If such repair and restoration have not been
         completed by April 1, 2002, the Closing shall occur on April 1, 2002
         (unless otherwise agreed to the contrary by Seller and Purchaser) in
         which case the provisions of subsections (iv)(1) and (iv)(2) above, as
         applicable, shall be in effect.

                  (vi)    As promptly as possible after the occurrence of any
         damage or destruction to the Unit, Seller and Purchaser shall take such
         steps as may be commercially reasonable to determine the period of time
         that will be necessary to effect the required repair and restoration to
         the Unit, including, without limitation, the hiring at the shared cost
         and expense of Seller and Purchaser of such engineers, architects and
         other consultants as may be reasonably necessary to make such
         determination. Seller and Purchaser shall take all steps as may be
         commercially reasonable to promptly commence and to diligently pursue
         to completion the required repairs and restoration of the Unit
         (including, without limitation, by causing the Board of Managers to
         take such actions and/or prosecute such insurance claims as may be
         reasonably necessary or desirable in connection therewith) both before
         and after the Closing Date, and shall cooperate with one another in all
         reasonable respects in connection therewith. If the Unit and/or
         Citigroup Center shall be damaged or destroyed by fire or other
         casualty prior to the Closing, and if this Agreement is not terminated
         in accordance with the provisions of subsection (a) or this subsection
         (b) above, Seller and Purchaser shall cause the Board of Managers to
         retain Seller, as its agent, to effect all repairs and restoration to
         Citigroup Center and/or the Unit which are required to be effected by
         the Board of Managers on behalf of the unit owners in Citigroup Center
         in accordance with the provisions of the Condominium Declaration. The
         retention of Seller as such agent, and Seller's agreement to act as
         such agent and to effect the completion of such repairs and
         restoration, shall be evidenced by an agreement in writing in form and
         substance reasonably satisfactory to Seller and Purchaser to be entered
         into among Seller, Purchaser and the Board of Managers, which agreement
         shall remain in full force and effect until all the required repairs
         and restoration shall have been completed and irrespective of whether
         the required repairs and restoration are completed before or after the
         Closing. Seller shall have the right under the terms of such retention
         agreement to take all steps as may be reasonably necessary to effect
         the expeditious completion of the required repairs and restoration,
         including without limitation, the hiring at the shared pro rata cost
         and expense of Seller and Purchaser (as determined on the basis of
         their respective ownership interest in Citigroup Center as of the date
         of this Agreement) of such architects, engineers, consultants,
         contractors, materialmen and subcontracts as may be necessary to effect
         the completion of the required repairs

                                      -51-


         and restoration. Seller shall be obligated at all times to act in good
         faith and in a commercially reasonable fashion in effecting the
         required repairs and restoration in a timely and expeditious manner,
         including without limitation, effecting the required repairs and
         restoration at commercially reasonable and competitive prices taking
         into account the scope and severity of the damage or destruction and
         the necessity to complete required repairs and restoration as quickly
         and expeditiously as possible. In this regard, Seller agrees that
         construction contracts will be let on an arms-length basis after
         competitive bidding, it being agreed, however, that Seller shall have
         the right in its reasonable and good faith discretion to select the
         contractors which in its opinion are most qualified to complete the
         required repairs and restoration notwithstanding the fact that such
         contractors may have submitted bids in excess of those submitted by
         other contractors. Seller shall keep Purchaser and the Board of
         Managers up to date and fully informed on the status, timing and cost
         of effecting the required repairs and restoration, and shall upon
         request of Purchaser or the Board of Managers provided such information
         with respect thereto as may be reasonably requested from time to time
         by the Purchaser or the Board of Managers. The Citigroup Center shall
         be repaired and restored to a condition substantially conforming to the
         plans and specifications therefor in effect immediately prior to such
         fire or other casualty (except for commercially reasonable deviations
         therefrom required for upgrades to the Citigroup Center, as shall be
         determined by Seller and Purchaser, each in the exercise of its
         reasonable discretion, or as required to conform to applicable laws)
         or, to the extent that Seller and Purchaser shall both agree, in
         accordance with new plans and specifications, which plans and
         specifications may be prepared by or at the request of Seller, PROVIDED
         THAT the same are prepared in accordance with the requirements of
         Paragraph 2.1 of Exhibit O of the Citibank Lease as to the submission
         of plans and specifications, and FURTHER PROVIDED THAT such plans and
         specifications shall be subject to the approval of Purchaser, which
         approval shall not be unreasonably withheld or delayed. Insurance
         proceeds which are available to cover the costs of such repairs and
         restoration shall be paid over to Seller as collected from the
         applicable insurance companies, which proceeds shall be used by Seller
         solely to cover the payment of actual costs and expenses incurred in
         connection with the making of the required repairs and restoration, it
         being agreed that (1) Seller and Purchaser shall share on a pro rata
         basis (as determined in accordance with their respective ownership
         interests in Citigroup Center as of the date of this Agreement) all
         costs and expenses which are incurred in connection with the making of
         such required repairs and restoration to the extent that the available
         insurance proceeds are not sufficient to cover the cost thereof, and
         (2) the remaining balance, if any, of such insurance proceeds after the
         payment of all costs and expenses incurred in connection with the
         making of the required repairs and restoration shall be shared by
         Seller and Purchaser on a pro rata basis (as determined in accordance
         with their respective ownership interests in Citigroup Center as of the
         date of this Agreement). Notwithstanding anything to the contrary
         herein above set forth in this subsection, it is agreed that (x)
         insurance proceeds which are

                                      -52-


         paid under insurance policies covering tenant improvements in the space
         currently occupied by Seller shall be allocated and available solely to
         cover the cost of repairing and restoring such tenant improvements, (y)
         to the extent such insurance proceeds are not sufficient to cover the
         cost of repairing and restoring such tenant improvements, all of such
         excess costs shall be covered solely by Seller, and (z) the remaining
         balance, if any, of such insurance proceeds after the payment of all
         costs and expenses incurred in connection with the making of such
         repairs and restoration shall belong solely to Seller. Notwithstanding
         anything to the contrary herein above set forth in this subsection, it
         is agreed that (A) at Purchaser's option, each of the tenants in
         Citigroup Center Office Unit One may be permitted to be responsible for
         the repair and restoration of its tenant improvements, including the
         selection and hiring of contractors, subcontractors and other
         professionals, all in accordance with the terms of its lease, (B)
         insurance proceeds which cover tenant improvements in Citigroup Center
         Office Unit One shall be allocated and available solely to cover the
         cost of repairing and restoring such tenant improvements, (C) to the
         extent such insurance proceeds are not sufficient to cover the cost of
         repairing and restoring such tenant improvements, all of such excess
         costs shall be covered by Purchaser and/or the tenants occupying space
         in Citigroup Center Office Unit One, and (D) the remaining balance, if
         any, of such insurance proceeds after the payment of all costs and
         expenses incurred in connection with the making of such repairs and
         restoration shall belong solely to Purchaser and/or such tenants, as
         applicable. Seller and Purchaser shall cooperate in all reasonable ways
         to effect the timely commencement and completion of all such required
         repairs and restoration.

                  (vii)   The provisions of this subsection (b) shall to the
         full extent applicable, and for so long as the same shall be
         applicable, survive the Closing under this Agreement. From and after
         the Closing Date, the provisions of subsection (iv) above shall to the
         full extent applicable, and for so long as the same shall be
         applicable, be deemed without further act or instrument incorporated by
         reference in the Citibank Lease as if set forth at length therein. Upon
         the request of either party, Seller and Purchaser shall enter into a
         written amendment to the Citibank Lease memorializing the incorporation
         therein of any provisions deemed incorporated into the Citibank Lease
         pursuant to the preceding sentence, provided that the failure of the
         parties to enter into any such written amendment shall not affect the
         validity or applicability of any such provisions.

         (c) The parties hereto expressly intend that the provisions of this
Section 16 and not Section 5-1311 of the New York State General Obligations Law,
shall govern in the event of a fire or other casualty.

                                      -53-


         17. CONDEMNATION.

         (a) If, between the date hereof and the Closing, fifty percent (50%) or
more (measured by square footage) of the floor space of Citigroup Center shall
be subject to a permanent taking or appropriation for public or quasi-public use
under the power of eminent domain or a condemnation proceeding (a "Major
Condemnation"), each of Purchaser and Seller shall have the right, exercisable
by giving written notice to the other within ten (10) days after receiving
written notice of such taking or appropriation, to terminate this Agreement, in
which case neither party shall have any further rights or obligations hereunder
except such obligations which expressly survive the termination of this
Agreement. If, between the date hereof and the Closing, any condemnation or
eminent domain proceedings are initiated which would result in the taking of all
or any portion of the Unit, or any other portion of Citigroup Center other than
a Major Condemnation, neither Seller nor Purchaser shall have the right to
terminate this Agreement. In such event, or in the event of a Major Condemnation
as to which neither party shall exercise the termination option contained in the
first sentence of this subsection, then (i) the parties shall proceed to Closing
without reduction of or offset against any amounts payable hereunder or any
other claim against the other, (ii) at the Closing, Seller shall assign and turn
over, and Purchaser shall be entitled to receive and keep any condemnation
proceeds in respect thereof, subject to the terms of the Condominium
Declaration, and (iii) the parties hereto shall cooperate in all reasonable
respects in order to effectuate such intent. The provisions of this Section 17
shall survive the Closing for a period without expiration.

         (b) The parties hereto expressly intend that the provisions of this
Section 17 and not Section 5-1311 of the New York State General Obligations Law,
shall govern in the event of a taking.


         18. REMEDIES.

     If the Closing fails to occur by reason of the failure or refusal of either
party to perform its obligations hereunder (for purposes of this Section 18, the
"Defaulting Party"), then the other party (for purposes of this Section 18, the
"Non-Defaulting Party") may terminate this Agreement by notice to the Defaulting
Party and/or the Non-Defaulting Party may avail itself of all rights and
remedies at law or in equity, including, without limitation, the remedy of
specific performance. Nothing contained in this Section shall be construed to
limit either party's right to enforce any covenant or indemnity which, pursuant
to the provisions of this Agreement, is specified to survive the Closing, nor to
prevent either party from proceeding against the other in an action at law for
the recovery of actual damages (but not punitive damages) suffered as a result
of the inaccuracy of any representation or warranty

                                      -54-


which, pursuant to the provisions of this Agreement, is specified to survive the
Closing, subject to any other limitations contained herein.

         19. INDEMNITIES.

         (a) SELLER'S INDEMNITY . Seller hereby agrees to indemnify Purchaser
and the other Purchaser Indemnified Parties against, and to hold Purchaser and
the other Purchaser Indemnified Parties harmless from, all claims, demands,
causes of action, losses, damages, liabilities, costs and expenses (including,
without limitation, reasonable attorneys' fees and disbursements) asserted
against or incurred by Purchaser or any of the other Purchaser Indemnified
Parties in connection with or arising out of (i) acts or omissions of Seller or
Seller's Representatives, or other matters or occurrences that take place before
the Closing and relate to the ownership, maintenance or operation of the Unit
(except to the extent caused by Purchaser's veto of any matter that is submitted
to Purchaser as a Purchaser Consent Action) including, without limitation, all
losses, costs, damages and expenses incurred by Purchaser and the other
Purchaser Indemnified Parties arising from audits performed by current or former
tenants of the Unit relating to escalations and pass-throughs charged by Seller
prior to the Closing, or (ii) a breach of any representation, warranty or
covenant of Seller contained in this Agreement. Seller's obligations under this
Section 19(a) shall survive the Closing for a period of two (2) years.

         (b) PURCHASER'S INDEMNITY . Purchaser hereby agrees to indemnify Seller
and the other Seller Indemnified Parties against, and to hold Seller and the
other Seller Indemnified Parties harmless from, all claims, demands, causes of
action, losses, damages, liabilities, costs and expenses (including, without
limitation, reasonable attorneys' fees and disbursements) asserted against or
incurred by Seller or any of the other Seller Indemnified Parties in connection
with or arising out of (i) acts or omissions of Purchaser or Purchaser's
Representatives, or other matters or occurrences that take place after the
Closing and relate to the ownership, maintenance or operation of the Unit, or
(ii) a breach of any representation, warranty or covenant of Purchaser contained
in this Agreement. Purchaser's obligations under this Section 19(b) shall
survive the Closing for a period of two (2) years.

         (c) NOTICE OF CLAIMS TO BE INDEMNIFIED. Whenever in this Agreement it
is provided that any party shall indemnify and hold harmless the other party,
then, as a condition to such indemnity the terms of this Section 19(c) shall
apply. The party indemnified shall promptly give written notice to the
indemnitor of any claim or demand made upon it which is or may be indemnified
against. The indemnitor shall have the right to defend against such claim or
demand by counsel selected by indemnitor's liability insurer or such other
counsel selected by indemnitor and reasonably satisfactory to the indemnified
party. The indemnified party shall reasonably cooperate with indemnitor, at
indemnitor's expense. The indemnified

                                      -55-


party shall not settle or approve the settlement of any claim without the
approval of the indemnitor, which approval shall not be unreasonably withheld or
delayed. Any separate counsel retained by the indemnified party shall be at its
own expense.

         20. ASSIGNMENT AND RECORDING.

         (a) Except as hereinafter provided, neither this Agreement nor any of
the rights or obligations hereunder may be assigned without the prior written
consent of the other parties hereto. Seller shall be entitled, without the need
for further notice to any other party, to assign its interests in this Agreement
to the Exchange Intermediary in the manner contemplated by the Exchange
Agreement. DLIP (but no other person or party which may hereafter be deemed to
be the "Purchaser" under this Agreement) shall be entitled, upon giving prior
written notice to Seller, to either assign its rights under this Agreement to
any person or entity provided such person or entity expressly assumes the
obligations of Purchaser hereunder pursuant to a written instrument in form and
substance reasonably satisfactory to Seller (but expressly excluding therefrom
any approval rights as to the identity of any assignee of Purchaser) or to
otherwise designate a person or party to whom title to the Unit shall be
conveyed, it being further understood and agreed that notwithstanding such
assignment and assumption or designation, as the case may be, Purchaser shall
not be relieved of any of its obligations under this Agreement and Seller shall
need only to look to DLIP and no other person or party for the performance of
Purchaser's obligations hereunder.

         (b) Neither this Agreement nor any memorandum of this Agreement may be
recorded without the prior written consent of the parties hereto.


         21. PROPERTY INFORMATION AND CONFIDENTIALITY.

         (a) Each of Seller and Purchaser (for purposes of this Section 21, each
a "Confidential Party") agrees that, prior to the Closing, all Property
Information shall be kept strictly confidential and shall not, without the prior
consent of the other, be disclosed by such Confidential Party or such
Confidential Party's Representatives, in any manner whatsoever, in whole or in
part, and will not be used by such Confidential Party or such Confidential
Party's Representatives, directly or indirectly, for any purpose other than
evaluating and consummating the transactions contemplated by this Agreement
(including, with respect to Purchaser, any assignment or designation described
in subsection 20(a)). Moreover, each Confidential Party agrees that, prior to
the Closing, the Property Information will be transmitted only to such
Confidential Party's Representatives (and, in the case of DLIP, any permitted
potential assignee or designee of DLIP's rights under this Agreement and such
assignee's or designee's Representatives and the Representatives of such
assignee's or designee's potential lenders) who need to know the Property
Information for the purpose of evaluating the transactions contemplated by this
Agreement or the financing thereof, and who

                                      -56-


are informed by such Confidential Party of the confidential nature of the
Property Information (and, in the case of any permitted potential assignee or
designee of DLIP's rights under this Agreement, who have entered into a
confidentiality agreement substantially in the form of Exhibit V attached hereto
or in such other form as is mutually and reasonably acceptable to Seller and
DLIP). The provisions of this Section 21 shall in no event apply to Property
Information which is a matter of public record and shall not prevent a
Confidential Party from complying with any laws or governmental ordinances,
rules, regulations, orders or requirements, including, without limitation,
governmental regulatory, disclosure, tax and reporting requirements.

         (b) Each of Seller and Purchaser, for the benefit of the other, hereby
agrees that between the date hereof and the Closing Date, it will not release or
cause or permit to be released any press notices, publicity (oral or written) or
advertising promotion relating to, or otherwise announce or disclose or cause or
permit to be announced or disclosed, in any manner whatsoever, the terms,
conditions or substance of this Agreement or the transactions contemplated
herein, without first obtaining the written consent of the other party hereto,
which consent shall not be unreasonably withheld, conditioned or delayed. It is
understood that the foregoing shall not preclude Seller or Purchaser from
discussing the substance or any relevant details of the transactions
contemplated in this Agreement, subject to the terms of Section 21(a) above,
with any of its attorneys, accountants, professional consultants or potential
lenders, as the case may be, or prevent Seller or Purchaser from complying with
any laws or governmental ordinances, rules, regulations, orders or requirements,
including, without limitation, governmental regulatory, disclosure, tax and
reporting requirements.

         (c) In the event this Agreement is terminated, each Confidential Party
and such Confidential Party's Representatives shall promptly deliver to the
other party to this Agreement all originals and copies of the Property
Information referred to in clause (i) of Section 21 (d) below in the possession
of such Confidential Party and such Confidential Party's Representatives.

         (d) As used in this Agreement, the term "Property Information" shall
mean (i) all information and documents in any way relating to the Unit, the
operation thereof or the sale thereof (including, without limitation, Leases and
Contracts) furnished to, or otherwise made available for review by, a
Confidential Party or its Representatives (or, in the case of DLIP, any
permitted potential assignee or designee of DLIP's rights under this Agreement
and such assignee's or designee's Representatives and the Representatives of
such assignee's or designee's potential lenders), by the other party to this
Agreement, or any of such other party's affiliates, or their agents or
representatives, including, without limitation, their contractors, engineers,
attorneys, accountants, consultants, brokers or advisors, and (ii) all analyses,
compilations, data, studies, reports or other information or documents prepared
or obtained by a Confidential Party or such Confidential Party's Representatives
containing or

                                      -57-


based, in whole or in part, on the information or documents described in the
preceding clause (i).

         (e) Seller shall refer to JLL all calls and inquiries from prospective
third-party purchasers who express an interest in purchasing Citigroup Center
and Seller shall not discuss any such purchase with any prospective third-party
purchasers. DLIP shall not have any obligation to advise Seller of the identity
of any prospective third-party purchasers of Citigroup Center unless this
Agreement is terminated pursuant to Section 16 of this Agreement. DLIP shall not
have any obligation to deliver copies of any confidentiality agreements to
Seller PROVIDED THAT all such confidentiality agreements which are in fact
executed and delivered are substantially in the form of Exhibit V attached
hereto without any material modification thereto, it being understood that,
without limiting what may constitute a material modification, any modification
to the form of confidentiality agreement that affects Seller's status as one of
the "Seller Parties" therein or that affects the rights or obligations of such
"Seller Parties" shall constitute a material modification of the confidentiality
agreement.

         (f) The provisions of this Section 21 shall survive the termination of
this Agreement and the Closing.

         22. ERISA.

         Purchaser represents and warrants to Seller that Purchaser is not an
employee benefit plan or a governmental plan, or a party in interest of either
of such plans, and that the funds being used to acquire the Unit are not plan
assets or subject to state laws regulating investment of, and fiduciary
obligations with respect to, a governmental plan. As used in this Section 22,
the terms "employee benefit plan", "party in interest", "plan assets" and
"governmental plan" shall have the respective meanings assigned to them in the
Employee Retirement Income Security Act of 1974, as amended, and the Regulations
promulgated in connection therewith. The representations and warranties
contained in this Section 22 shall survive the Closing for a period without
expiration.

         23. SURVIVAL.

         Except as otherwise provided in this Agreement, no representations,
warranties, covenants or other obligations of Seller or Purchaser set forth in
this Agreement shall survive the Closing (the last day of any applicable
survival period pertaining to any particular representation, warranty, covenant
or other obligation set forth in any provision of this Agreement being a
"Survival Termination Date"), and no action or proceeding based upon any such
representation, warranty, covenant or other obligation which survives the
Closing shall be commenced after the applicable Survival Termination Date, if
any.

                                      -58-


         24. MISCELLANEOUS PROVISIONS.

         (a) ENTIRE AGREEMENT. This Agreement, together with the Other
Agreement, the Exchange Agreement, the Master License Agreement, the Master Side
Letter, the Systems Agreement and each of the exhibits attached hereto and
thereto, contains all of the terms agreed upon between the parties with respect
to the subject matter hereof and supersedes all prior agreements or
understandings between the parties with respect to the matters contained herein.
The parties hereto acknowledge that no oral or other agreements, understandings,
representations or warranties exist with respect to this Agreement or with
respect to the obligations of the parties hereto under this Agreement, except
those specifically set forth in this Agreement.

         (b) AMENDMENTS. This Agreement may not be changed, modified or
terminated, except by an instrument executed by the parties hereto.

         (c) RIGHTS CUMULATIVE; WAIVERS . The rights of each of the parties
under this Agreement are cumulative and may be exercised as often as any party
considers appropriate. The rights of any of the parties hereunder shall not be
capable of being waived or varied otherwise than by an express waiver or
variation in writing executed by all of the parties hereto. Failure to exercise
or any delay in exercising any of such rights also shall not operate as a waiver
or variation of that or any other such right. Defective or partial exercise of
any of such rights shall not preclude any other or further exercise of that or
any other such right. No act or course of conduct or negotiation on the part of
any party shall in any way preclude such party from exercising any such right or
constitute a suspension or any variation of any such right.

         (d) PARTIAL INVALIDITY . If any term or provision of this Agreement or
the application thereof to any person or circumstance shall, to any extent, be
invalid or unenforceable, the remainder of this Agreement, or the application of
such term or provision to persons or circumstances other than those as to which
it is held invalid or unenforceable, shall not be affected thereby, and each
term and provision of this Agreement shall be valid and be enforced to the
fullest extent permitted by law.

         (e) CONSTRUCTION . Unless the context otherwise requires, singular
nouns and pronouns, when used herein, shall be deemed to include the plurals of
such nouns or pronouns and pronouns of one gender shall be deemed to include the
equivalent pronouns of the other gender.

         (f) SECTION HEADINGS . The headings of the various sections of this
Agreement have been inserted only for the purposes of convenience, and are not a
part of this Agreement

                                      -59-


and shall not be deemed in any manner to modify, explain, expand or restrict any
of the provisions of this Agreement.

         (g) GOVERNING LAW . This Agreement shall be governed by the laws of the
State of New York applicable to contracts made and to be performed entirely
within the State of New York, without regard to principles of conflict of laws.

         (h) JURISDICTION; VENUE . For the purposes of any suit, action or
proceeding involving this Agreement, the parties hereto hereby expressly submit
to the jurisdiction of all federal and state courts sitting in New York County
in the State of New York and consent that any order, process, notice of motion
or other application to or by any such court or a judge thereof may be served
within or without such court's jurisdiction by registered mail or by personal
service, PROVIDED that a reasonable time for appearance is allowed, and the
parties hereto agree that such court shall have exclusive jurisdiction over any
such suit, action or proceeding commenced under this Agreement. Each party
hereby irrevocably waives any objection that it may have now or hereafter to the
laying of venue of any suit, action or proceeding arising out of or relating to
this Agreement brought in any federal or state court sitting in New York County
in the State of New York and hereby further irrevocably waives any claim that
any such suit, action or proceeding brought in any such court has been brought
in an inconvenient forum.

         (i) NO THIRD_PARTY BENEFICIARIES . No person, firm or other entity
other than the parties hereto (and, to the extent provided herein, the Seller
Indemnified Parties and the Purchaser Indemnified Parties) and their respective
permitted assignees or designees shall have any rights or claims under this
Agreement. The representations, warranties, covenants and indemnities of each
party hereunder shall run to the benefit of the parties hereto (and, to the
extent provided herein, the Seller Indemnified Parties and the Purchaser
Indemnified Parties) and their respective successors in interest (whether by
merger, dissolution, operation of law or otherwise) and permitted assignees and
designees.

         (j) FURTHER ASSURANCES; COOPERATION . The parties will execute,
acknowledge and deliver all and every such further acts, deeds, conveyances,
assignments, notices, transfers and assurances as may be reasonably required for
the better assuring, conveying, assigning, transferring and confirming unto
Purchaser the Unit and for carrying out the intentions or facilitating the
consummation of the transactions contemplated by this Agreement. In furtherance
thereof, the parties hereto shall cooperate with each other to effectuate the
transactions contemplated by this Agreement and to minimize transaction costs.
Notwithstanding anything to the contrary contained herein, the obligations of
Seller to sell, and Purchaser to purchase, the Unit in accordance with the terms
and provisions of this Agreement and to otherwise consummate the transactions
contemplated by this Agreement, shall be contingent upon a simultaneous closing
under the Other Agreement. The provisions of this subsection shall survive the
Closing for a period without expiration.

                                      -60-


         (k) TENANT ESTOPPELS . Seller shall request each tenant under a Lease
in the Unit to deliver an estoppel certificate in the form attached hereto as
Exhibit W (the "Standard Tenant Estoppel") and Seller shall exercise good faith,
commercially reasonable efforts to cause such tenants to furnish executed
Standard Tenant Estoppels and to deliver the same to Purchaser; provided,
however, in no event shall Seller be obligated to obtain executed estoppel
certificates from any such tenant (other than Seller's obligation to deliver the
Unit One Citibank Estoppel and the Unit Two Citibank Estoppel. With respect to
Seller's obligation to deliver the Unit One Citibank Estoppel and the Unit Two
Citibank Estoppel, Seller further agrees that it will reasonably cooperate with
any reasonable request for modifications thereto to the extent such requested
modifications are made by an assignee or designee of DLIP.

         (l) WAIVER OF TRIAL BY JURY . THE PARTIES HERETO KNOWINGLY, VOLUNTARILY
AND INTENTIONALLY WAIVE (TO THE EXTENT PERMITTED BY APPLICABLE LAW) ANY RIGHT TO
A TRIAL BY JURY OF ANY DISPUTE ARISING UNDER OR RELATING TO THIS AGREEMENT AND
AGREE THAT ANY SUCH DISPUTE SHALL BE TRIED BEFORE A JUDGE SITTING WITHOUT A
JURY.

         (m) WAIVER OF RIGHT OF FIRST OFFER . Each of the parties hereto hereby
waives any right of first offer it may have to purchase the Unit or Citigroup
Center Office Unit One in connection with the sale of the Unit in the manner
provided herein and the sale of Citigroup Center (i.e., the Unit and Citigroup
Center Office Unit One) by DLIP in the manner contemplated hereby.

         (n) COUNTERPARTS . This Agreement may be executed in several
counterparts, each of which shall constitute one and the same instrument and
either party hereto may execute this Agreement by signing any such counterpart.

                                      -61-


         IN WITNESS WHEREOF, Seller and Purchaser have caused this Agreement to
be executed by their respective duly authorized representatives as of the day
and year first above written.

                                       CITIBANK, N.A.


                                       By: /s/ MICHAEL W. BROIDO
                                          --------------------------------------
                                          Name:  Michael W. Broido
                                          Title: Vice President



                                       DAI-ICHI LIFE INVESTMENT PROPERTIES, INC.


                                       By: /s/ HITOSHI YAMAUCHI
                                          --------------------------------------
                                          Name:  Hitoshi Yamauchi
                                          Title: Senior Vice President

                                      -62-