CERTIFICATE OF AMENDMENT OF CERTIFICATE OF INCORPORATION NTECH, CORPORATION, a corporation organized and existing under and by virtue of the General Corporation Law of the State of Delaware, DOES HEREBY CERTIFY: FIRST: That at a meeting of the Board of Directors of NTECH, CORPORATION, resolutions were duly adopted setting forth a proposed amendment of the Certificate of Incorporation of said corporation, declaring said amendment to be advisable and calling a meeting of the stockholders of said corporation for consideration thereof. The resolution setting forth the proposed amendment is as follows: RESOLVED, that the Certificate of Incorporation of this corporation be amended by changing the Articles thereof numbered "first" so that, as amended, said Article shall be and read as follows: THE NAME OF THE CORPORATION IS: MOLECULAR ROBOTICS, INC. SECOND: That thereafter, pursuant to resolution of its Board of Directors, a special meeting of the stockholders of said corporation was duly called and held, upon notice in accordance with Section 222 of the General Corporation Law of the State of Delaware at which meeting the necessary number of shares as required by statute were voted in favor of the amendment. THIRD: That said amendment was duly adopted in accordance with the provisions of Section 242 of the General Corporation Law of the State of Delaware. FOURTH: That the capital of said corporation shall not be reduced under or by reason of said amendment. IN WITNESS WHEREOF, NTECH CORPORATION has caused this certificate to be signed by Thomas McCarthy its President, and Susan Brana its Secretary, this 23 day of March 2000. By: /s/ THOMAS MCCARTHY Thomas McCarthy President Attest: /s/ SUSAN BRANA Susan Brana Secretary