Disclaimer (Continued) NEITHER THE SEC NOR ANY OTHER SECURITIES COMMISSION OR SIMILAR REGULATORY AUTHORITY, IN THE UNITED STATES, CANADA OR ELSEWHERE, HAS REVIEWED, APPROVED OR DISAPPROVED OF ANY SECURITIES OR THIS PRESENTATION OR DETERMINED IF THIS PRESENTATION IS TRUTHFUL OR COMPLETE, AND ANY REPRESENTATION TO THE CONTRARY IS AN OFFENSE. Participants in Solicitation This Presentation may be deemed solicitation material in respect of the Proposed Business Combination. PBAX, Intrinsic Medicine, and certain of their respective directors, executive officers and other members of management and employees may, under SEC rules, be deemed to be participants in the solicitation of proxies from PBAX’s stockholders in connection with the Proposed Business Combination. Information regarding the persons who may, under SEC rules, be deemed participants in the solicitation of PBAX’s stockholders in connection with the Proposed Business Combination will be set forth in PBAX’s Proxy / Registration Statement when it is filed with the SEC. You can find more information about PBAX’s directors and officers in PBAX’s filings with the SEC, including PBAX’s initial public offering prospectus, which was filed with the SEC on October 8, 2021, and PBAX’s subsequent annual report on Form 10-K and PBAX’s quarterly reports on Form 10-Q. Additional information regarding the participants in the proxy solicitation and a description of their direct and indirect interests, by security holdings or otherwise, will be included in the Proxy / Registration Statement when it becomes available. Stockholders, potential investors and other interested persons should read the Proxy / Registration Statement carefully when it becomes available before making any voting or investment decisions. You may obtain free copies of these documents, when available, as described in the preceding paragraphs. Forward-Looking Statements All statements other than statements of historical facts contained in this presentation are forward-looking statements. Forward-looking statements may generally be identified by the use of words such as “believe,” “may,” “will,” “estimate,” “continue,” “anticipate,” “intend,” “expect,” “should,” “would,” “plan,” “project,” “forecast,” “predict,” “potential,” “seem,” “seek,” “future,” “outlook,” “target” or other similar expressions (or the negative versions of such words or expressions) that predict or indicate future events or trends or that are not statements of historical matters. These forward-looking statements include, but are not limited to, statements regarding the financial position, business strategy and the plans and objectives of management for future operations including as they relate to the Proposed Transactions, pricing and market opportunity, the satisfaction of closing conditions to the Proposed Transactions and related transactions, the level of redemptions by PBAX’s public stockholders and the timing of the completion of the Proposed Business Combination, including the anticipated closing date of the Proposed Business Combination and the use of the cash proceeds therefrom. These statements are based on various assumptions, whether or not identified in this presentation, and on the current expectations of Intrinsic Medicine’s and PBAX’s management and are not predictions of actual performance. These forward-looking statements are provided for illustrative purposes only and are not intended to serve as, and must not be relied on by any investor as a guarantee, an assurance, a prediction or a definitive statement of fact or probability. Actual events and circumstances are difficult or impossible to predict and may differ from such assumptions, and such differences may be material. Many actual events and circumstances are beyond the control of Intrinsic Medicine and PBAX. These forward-looking statements are subject to a number of risks and uncertainties, including (i) changes in domestic and foreign business, market, financial, political and legal conditions; (ii) the inability of the parties to successfully or timely consummate the Proposed Business Combination, including the risk that any required regulatory approvals are not obtained, are delayed or are subject to unanticipated conditions that could adversely affect the combined company or the expected benefits of the Proposed Business Combination, or that the approval of the stockholders of PBAX is not obtained; (iii) the ability to maintain the listing of the combined company’s securities on the stock exchange; (iv) the inability to complete any private placement financing, the amount of any private placement financing or the completion of any private placement financing with terms unfavorable to you; (v) the risk that the Proposed Transactions disrupt current plans and operations of PBAX or Intrinsic Medicine as a result of the announcement and consummation of the Proposed Transactions; (vi) the risk that any of the conditions of closing of the Proposed Business Combination are not satisfied in the anticipated manner or on the anticipated timeline or are waived by any of the parties thereto; (vii) the failure to realize the anticipated benefits of the Proposed Transactions; (viii) risks relating to the uncertainty of the costs related to the Proposed Transactions; (ix) risks related to the rollout of Intrinsic Medicine’s business strategy and the timing of expected business milestones; (x) the effects of competition on Intrinsic Medicine’s future business and the ability of the combined company to grow and manage growth, establish and maintain relationships with customers and healthcare professionals and retain its management and key employees; (xi) risks related to domestic and international political and macroeconomic uncertainty, including the Russia-Ukraine conflict; (xii) the outcome of any legal proceedings that may be instituted against PBAX, Intrinsic Medicine or any of their respective directors or officers, following the announcement of the Proposed Business Combination; (xiii) the amount of redemption requests made by PBAX’s public stockholders; (xiv) the ability of PBAX to issue equity, if any, in connection with the Proposed Business Combination or to otherwise obtain financing in the future; (xv) the impact of the global COVID-19 pandemic and governmental responses on any of the foregoing risks; (xvi) risks related to biotechnology, industry and regulations; (xvii) changes in laws and regulations; and (xviii) those factors discussed in PBAX’s Annual Report on Form 10-K for the year ended December 31, 2021, the Quarterly Report on Form 10-Q for the quarter ended March 31, 2022 and the Quarterly Report on Form 10-Q for the quarter ended June 30, 2022, in each case, under the heading “Risk Factors,” and other documents of PBAX to be filed with the SEC, including the Proxy / Registration Statement. If any of these risks materialize or PBAX’s or Intrinsic Medicine’s assumptions prove incorrect, actual results could differ materially from the results implied by these forward-looking statements. There may be additional risks that neither PBAX or Intrinsic Medicine presently know or that PBAX and Intrinsic Medicine currently believe are immaterial that could also cause actual results to differ from those contained in the forward-looking statements. In addition, forward-looking statements reflect PBAX’s and Intrinsic Medicine’s expectations, plans or forecasts of future events and views as of the date of this presentation. PBAX and Intrinsic Medicine anticipate that subsequent events and developments will cause PBAX’s and Intrinsic Medicine’s assessments to change. However, while PBAX and Intrinsic Medicine may elect to update these forward-looking statements at some point in the future, each of PBAX and Intrinsic Medicine specifically disclaim any obligation to do so, unless required by applicable law. These forward-looking statements should not be relied upon as representing PBAX’s and Intrinsic Medicine’s assessments as of any date subsequent to the date of this presentation. Accordingly, undue reliance should not be placed upon the forward-looking statements. 3