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 10.1 Sales, Marketing, Distribution, and Supply Agreement {***} WHEREAS HEMISPHERX is a biopharmaceutical company with headquarters at One Penn Center, 1617 JFK Boulevard, Suite 500, Philadelphia, PA 19103, U.S. ("HEMISPHERX") and Scientific Products Pharmaceutical Co. LTD is a pharmaceutical company with its primary offices located at Tahlia Street, P.O Box 10485, Riyadh 11433 Saudi Arabia (" SCIEN"), each a "Party" together, "Parties", and WHEREAS HEMISPHERX owns intellectual proprietary rights relating to Interferon alfa-n3 (human leukocyte derived), and WHEREAS HEMISPHERX desires to have Interferon alfa-n3 (human leukocyte derived) provided to physicians to treat genital warts and other infections and diseases, including MERS, in the GCC (Gulf Cooperation Council) states , as appropriate, prior to regulatory approval in such countries and to have Interferon alfa-n3 (human leukocyte derived) approved by the regulatory authorities in each GCC country (Kingdom of Saudi Arabia, Bahrain, Qatar, Kuwait, United Arab emirates (UAE) and Sultanate of Oman)), and WHEREAS SCIEN has sales, marketing, distribution capabilities in the GCC states, and WHEREAS, AFTER A SUCCESSFUL CLINICAL TRIAL IN MERS, SCIEN affirms it has the ability to supply Interferon alfa-n3 (human leukocyte derived) in the GCC States prior to regulatory approval and simultaneously seek to gain regulatory approval in each of the GCC States. After the clinical trial in MERS has been conducted, in the event it is successful and the Hemispherx manufacturing site requires approved by the GCC / SFDA, the cost of any post-clinical trial inspection of the facility to be the responsibility of Scien or the regulatory authority, and subsequently to market, sell and distribute Interferon alfa-n3 (human leukocyte derived) in the GCC, and WHEREAS, SCIEN desires to supply Interferon alfa-n3 (human leukocyte derived) under special approval from the Saudi Ministry of Health and for other GCC states where applicable, and WHEREAS, HEMISPHERX desires to supply and sell Interferon alfa-n3 (human leukocyte derived)) to SCIEN, and SCIEN is willing to purchase Interferon alfa-n3 (human leukocyte derived) from HEMISPHERX for the purposes described in this agreement. NOW THEREFORE, in consideration of the mutual covenants and agreements made herein, and for other good and valuable consideration, the receipt of which is hereby acknowledged, the Parties agree as follows: I. DEFINITIONS "Affiliate" means any corporation or other business entity, which controls, is controlled by, or is under the common control of a Party. "End User" means a physician, medical facility or institution, or government agency that purchases Product with the intent of administering it to a patient. "Field" means refractory/recurrent genital warts, recombinant interferon refractory patients and patients with other infectious diseases, e.g., MERS, influenza, West Nile Virus, and cancer, etc. "HEMISPHERX Intellectual Property" means all HEMISPHERX patents, patent applications, know-how, and trademarks owned or controlled by HEMISPHERX up to the termination or expiration of this Agreement. "List Price" means ${***}/Product Unit. "Product" means an injectable formulation of clinical grade Interferon alfa-n3 (human leukocyte derived). {***} Confidential portions of this exhibit have been redacted and filed separately with the Commission pursuant to a confidential treatment request in accordance with Rule 24b-2 of the Securities Exchange Act of 1934, as amended. Page 1 of 28 "Product Data" means all data possessed by HEMISPHERX relating to the use of Interferon alfa-n3 (human leukocyte derived) to treat patients in the Field and which is needed to obtain regulatory approval in the Territory. "Product Unit" means 1 x1ml vial containing 5 million international units (I.U.) of Interferon alfa-n3 (human leukocyte derived) "Sales Price" means the price SCIEN and/or its Affiliates charge an End User for a Product Unit. "Territory" means the GCC States "Transfer Price" means a discounted price of ${***}/ Product Unit. II. LICENSE CONDITION PRECEDENT: THE GRANTING OF ANY AND ALL LICENSES OR PRIVILEGES HEREIN IS SUBJECT THE THE SUCCESSFUL COMPLETION OF A FIVE PERSON MINIMUM CLINICAL TRIAL IN THE KINGDOM OF SAUDI ARABIA TREATING EARLY ONSET PATIENTS INFECTED WITH MERS. A. Subject to the condition above, HEMISPHERX hereby grants SCIEN the exclusive license to sell, market, and distribute Product for use in the Field in the Territory for Direct Access/EAP and Regulatory Agency-Approved (RAA) purposes. B. SCIEN shall not use HEMISPHERX Intellectual Property nor sell nor permit the sale of any products that use the HEMISPHERX Intellectual Property outside the Territory or knowingly sell or have sold any products that use the HEMISPHERX Intellectual Property to any party in or outside the Territory for export or sale outside the Territory, without HEMISPHERX's prior written consent. C. SCIEN will have six 6) months after the date of this Agreement to
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Extract the exact clause related to "Covenant Not To Sue" from the excerpt above.