system: You are a contract-analysis assistant performing a span-extraction task. You are given an excerpt from a commercial contract and the name of a clause type to locate within it.

Return the exact text of the requested clause, copied verbatim from the excerpt — identical wording and punctuation, with no paraphrasing, summarising, explanation, or added commentary.

The excerpt is one window of a much longer contract and often will not contain the requested clause. If the requested clause does not appear in this excerpt, respond with exactly: Not found.

Output only the extracted clause text, or the exact string `Not found.` — nothing else.

user: Contract excerpt:
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Exhibit 10.10 CONFIDENTIAL TREATMENT REQUESTED. INFORMATION FOR WHICH CONFIDENTIAL TREATMENT HAS BEEN REQUESTED IS OMITTED AND MARKED WITH "[***]". AN UNREDACTED VERSION OF THE DOCUMENT HAS ALSO BEEN FURNISHED SEPARATELY TO THE SECURITIES AND EXCHANGE COMMISSION AS REQUIRED BY RULE 406 UNDER THE SECURITIES ACT OF 1933, AS AMENDED. MASTER DEVELOPMENT AND MANUFACTURING AGREEMENT This Master Development and Manufacturing Agreement (including all appendices hereto, this "Agreement") is entered into as of February 13, 2018 (the "Effective Date") by and between Magenta Therapeutics, Inc., a Delaware corporation having offices at 50 Hampshire Street, 8t h Floor, Cambridge, MA 02139 ("Magenta"), and Bachem Americas, Inc., a California corporation, having offices at 3132 Kashiwa Street, Torrance, CA 90505 ("Bachem"). Magenta and Bachem may be referred to individually as a "Party" or collectively as the "Parties." RECITALS WHEREAS, Magenta is engaged in the development and research of certain pharmaceutical products and requires assistance in the development and manufacture of active pharmaceutical ingredients for its clinical trials; and WHEREAS, Bachem is a contract manufacturer that possesses the necessary technical capabilities and operates pharmaceutical process development facilities for both the development and manufacture of pharmaceutical products used in clinical trials, as required by Magenta; and WHEREAS, Magenta desires Bachem to provide the Services and manufacture the Products specified in Project Plans (as defined below); and WHEREAS, Bachem is willing to provide the Services, manufacture the Product, and fulfill the Project Plans on the terms and conditions set forth below. NOW, THEREFORE, in consideration of the mutual promises contained herein, and for other good and valuable consideration, the receipt and adequacy of which each of the Parties does hereby acknowledge, the Parties, intending to be legally bound, agree as follows. Section 1. DEFINITIONS As used herein, the following terms shall have the following meanings: 1.1 "Affiliate" shall mean any corporation or other entity which controls, is controlled by, or is under common control with, a Party to this Agreement. A corporation or other entity shall be regarded as hi control of another corporation or entity if it owns or directly or indirectly controls more than fifty percent (50%) of the voting stock or other ownership interest of the other corporation or entity, or if it possesses, directly or indirectly, the power to direct or cause the direction of the management and policies of the corporation or other entity or the power to elect or appoint fifty percent (50%) or more of the members of the governing body of the corporation or other entity. 1.2 "Applicable Laws" means all relevant federal, state and local laws, statutes, rules, regulations, and ordinances and industry standards and guidelines as in effect on the Effective Date or adopted thereafter and which are applicable to a Party's activities hereunder in their respective countries, including, without limitation, the applicable regulations and guidelines of the FDA and all applicable GMPs together with amendments thereto. CONFIDENTIAL TREATMENT REQUESTED. INFORMATION FOR WHICH CONFIDENTIAL TREATMENT HAS BEEN REQUESTED IS OMITTED AND MARKED WITH "[***]". AN UNREDACTED VERSION OF THE DOCUMENT HAS ALSO BEEN FURNISHED SEPARATELY TO THE SECURITIES AND EXCHANGE COMMISSION AS REQUIRED BY RULE 406 UNDER THE SECURITIES ACT OF 1933, AS AMENDED. 1.3 "Batch" means a specific quantity of Product that is intended to have uniform character and quality, within specified limits, and is produced according to a single manufacturing order during the same cycle of manufacture. 1.4 "CMC" shall mean (i) manufacturing process development for Product; (ii) all chemistry, manufacturing and control procedures necessary for the manufacturing, testing and quality control release of Product; and (iii) sourcing and testing of all raw materials and components used in the production of any Product. 1.5 "[***]" means the specific sequence(s) defined in Appendix B. 1.6 "Development Specifications" shall mean the requirements of all Applicable Laws and the procedures, process parameters, analytical tests and other attributes and written specifications for the Development Work attached hereto as part of a Project Plan. 1.7 "Development Work" shall mean those development Services that are to be performed by Bachem hereunder and which may include work related to identifying, formulating, developing and demonstrating cost effective, reproducible Product and manufacturing a feasibility Batch. 1.8 "DMF" means a Drug Master File as described in 21 C.F.R. § 314.420. 1.9 "Effective Date" has the meaning set forth in the introduction. 1.10 "FDA" means the United States Food and Drug Administration or any successor entity thereto. 1.11 "GMPs" shall mean current good manufacturing practices, including the regulations promulgated by the FDA under the United States Food,
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Extract the exact clause related to "Effective Date" from the excerpt above.

assistant: February 13, 2018