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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shall SutroVax, its Affiliates or Sublicensees have the right to access any Sutro Core Know-How (as defined in the License Agreement), whether directly from Sutro or its Affiliates or through a CMO or otherwise, and SutroVax, its Affiliates and Sublicensees shall not require, request or solicit any CMO to deliver any Sutro Core Know-How to SutroVax, its Affiliates and/or its Sublicensees, and no agreement between any CMO and Sutro, its Affiliates and Subsidiaries shall contain any provision granting to SutroVax or its Affiliates or Sublicensees any right to obtain or use any Sutro Core Know-How. Without limiting the foregoing, in the event any item of Sutro Core Know-How is delivered to SutroVax, its Affiliates and/or its Sublicensees (except as set forth in Section 15.3 of the License Agreement), SutroVax, its Affiliates and Sublicensees shall immediately return such item to Sutro. Notwithstanding the foregoing, to the extent SutroVax or any of its Affiliates or Sublicensees is required by a Regulatory Authority (or Applicable Law) in the United States, Europe or Japan to confidentially disclose, as part of the applicable regulatory filings with respect to a Vaccine Composition, any Sutro Core Know-How (for clarity, excluding any tangible embodiments of such Sutro Core Know-How other than information and documentation), Sutro shall, upon SutroVax's written request, confidentially disclose such Sutro Core Know-How as part of the applicable regulatory filings, subject to the payment obligations set forth in Section 5.4 of the License Agreement. 2.19 Express Rights. Except as expressly set forth in this Supply Agreement, no rights or licenses are granted to SutroVax under this Supply Agreement. 2.20 Extract Requirements. SutroVax agrees to purchase all its requirements of Extract from Sutro in accordance with this Agreement, except to the extent SutroVax is allowed to purchase Extract from (a) Alternate Suppliers engaged by Sutro in accordance with Section 2.15 of this Agreement; (b) a CMO engaged or established and authorized by Sutro under Section 3.l(d) of the License Agreement; or (c) a CMO authorized by Sutro under Section 3.l(e) of the License Agreement. Manufacturing of Extracts in breach of this Section 2.20 shall be deemed a material breach of this Agreement and the License Agreement by SutroVax. ARTICLE 3 PRICING AND PAYMENT 3.1 Invoices. Sutro shall invoice SutroVax at the time of each shipment of Product(s) for the Price for such shipment. SutroVax will pay such invoices within [***] days of receipt of invoice (including all required documentation) by SutroVax. 3.2 Prices. The Prices for the Products shall not exceed [***] of the Fully Burdened Manufacturing Costs of such Product at the time such Product is manufactured and shall be set forth in the applicable Work Order. Upon SutroVax's request from time-to-time, Sutro shall disclose to SutroVax the then- current Price for Product. The Price for the Products as of the Effective Date is set forth in Schedule 1. 3.3 Recordkeeping. During the Term and for [***] years thereafter, or for such longer period as may be required by Applicable Law, Sutro shall prepare and retain, and shall cause its subcontractors to prepare and retain, accurate books and records related to transactions made pursuant to this Supply Agreement and Prices. Such records shall be made available for reasonable review, audit and inspection upon reasonable notice and with reasonable frequency, upon SutroVax's request for the purpose of verifying Sutro's calculations of amounts due hereunder, the basis for such calculations (including Sutro's calculation of the Fully Burdened Manufacturing Costs) or payments and Sutro's compliance with the terms and conditions of this Supply Agreement. Audits and inspections may be conducted by SutroVax's own personnel or retained consultant(s), subject to the confidentiality obligations set forth in this Supply Agreement. 3.4 Taxes. The Prices are exclusive of all Taxes. SutroVax will pay all taxes and duties that are assessed by any national, federal, state or local governmental authority on SutroVax's purchase or use of the Products, including, without limitation, sales, use, excise, value-added and withholding taxes, but excluding any taxes based on Sutro's income or gross receipts (collectively, "Taxes"). Sutro will separately identify all such Taxes on Sutro's invoice. ARTICLE 4 PRODUCT TESTING 4.1 Product Testing and Inspections. Each shipment of Product shall be accompanied by a certificate of analysis describing all current requirements of the Specifications and results of tests performed on such Product and a certificate of conformity certifying that the quantities of Product supplied have been Manufactured, controlled and released according to the Required Standards ("COA/COC") as set forth in the applicable Quality Agreement (subject to SutroVax's
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Extract the exact clause related to "Source Code Escrow" from the excerpt above.

assistant: Not found.