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:
"""
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, Drug and Cosmetic Act, 21 C.F.R. Part 210 et seq., as amended from time to time, applicable guidance documents issued by the FDA, applicable documents developed by the International Conference on Harmonization (ICH) to the extent that they are applicable to Product and the Parties hereunder. 1.12 "Governmental Authority" means any court, including any political subdivision thereof, court instrumentality, or agency thereof, and any other federal, state, or public authority, domestic or foreign, exercising governmental powers and having jurisdiction over any activity of a Party under this Agreement. 1.13 "IND" means an investigational new drug application relating to a Product, and includes such applications submitted to the FDA and equivalent applications submitted to a Governmental Authority outside of the U.S. 1.14 "Latent Defect" means a defect which could have been detected (but was not) by the analytical test methods in operation at the date of shipment to Magenta, attributable to an act or omission of Bachem that causes a Product to fail to conform to the Specifications, which may not be discoverable upon the inspection and testing which Magenta would have been expected to carry out in its ordinary course of business, but is discovered at a later time. 2 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. 1.15 "Product" means the product to be developed or manufactured by Bachem pursuant to a Project Plan. 1.16 "Project Plant(s)" means a mutually agreed to project plan, statement of work, quotation or other ordering document that sets forth a description of the Services to be provided by Bachem, and related timeline(s), costs, and other relevant details, that references, and is expressly governed by this Agreement and is executed by an authorized representative of each Party. Notwithstanding, the Parties acknowledge and agree that the quotations identified in Appendix A attached hereto are Project Plans, and are governed by this Agreement, even though they do not expressly reference this Agreement. 1.17 "Services" means, with respect to a Project Plan, those services (including Development Work and manufacture of Product) to be provided by Bachem, as described in such Project Plan. 1.18 "Specifications" means the requirements of all Applicable Laws, the master batch record, current standard operating procedures and the procedures, process parameters, analytical tests and other attributes and written specifications for the Product attached hereto as part of a Project Plan, which the Parties agree are necessary for the manufacture and release of the Product for use in clinical trials. The Parties recognize that specifications for Product for a specific Project Plan are likely to change during the term of this Agreement, and the Parties agree to act in good faith and reasonably to effect such changes as may be required. Copies of such Specifications, as amended, shall be maintained by both Parties, and shall be incorporated into this Agreement and the Quality Agreement (as defined below). 1.19 "Third Party" means any entity other than Magenta or Bachem. 1.20 "U.S." means the United States of America, its territories, commonwealths, and possessions, including the District of Columbia, the Commonwealth of Puerto Rico, the Virgin Islands, Guam, and all other places under the jurisdiction thereof. Section 2. ENGAGEMENT OF BACHEM Magenta hereby engages Bachem to perform the Services and manufacture the Product in accordance with the applicable Project Plan(s) and in compliance with Applicable Laws and the terms and conditions set forth herein, and Bachem hereby accepts such
"""

Extract the exact clause related to "Covenant Not To Sue" from the excerpt above.

assistant: Not found.