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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any Affiliate of Sekisui or Qualigen. 2. Appointment and Term 2.1. Appointment. Qualigen hereby appoints Sekisui, and Sekisui accepts the appointment to act on an exclusive basis pursuant to the terms and conditions of this Agreement, as a distributor for the sale of the Products in the Territory. Sekisui shall be permitted to appoint sub-distributors in the Territory (including any current Qualigen distributors) with the approval of Qualigen, not to be unreasonably withheld or delayed. Sekisui shall purchase the Products exclusively from Qualigen, and Qualigen shall supply the Products exclusively to Sekisui, in each case for the Territory. Qualigen shall assign to Sekisui Qualigen's agreements with Qualigen's current distributors (such that such current Qualigen distributors shall become Sekisui subdistributors), each of which is set forth on Schedule 2.1 hereto; if any of such agreements do not allow such assignment and the current distributor declines to consent to such an assignment to Sekisui, Qualigen shall (if Sekisui so requests) act pursuant to such agreement to terminate such agreement. 2.2. Term. The initial term of this Agreement shall commence on the Effective Date and shall continue for a period of five (5) years unless earlier terminated pursuant to Section 14 hereof (the "Term"). The initial term of this Agreement and any renewal term thereof shall be automatically extended at the end of the initial term and any renewal term thereof for an additional one (1) year period unless either Party notifies the other Party not less than six (6) months before the end of the then in effect term of its intent to terminate this Agreement. References in this Agreement to "Term" shall be deemed to include the initial five (5) year term as well as a reduction or extension of that time period that may occur as a result of the provision of this Section 0 or the provisions of Section 14. 3 Source: RITTER PHARMACEUTICALS INC, S-4/A, 3/13/2020 2.3. Customer Product Rentals. All instruments placed with customers under a rental program during the Term shall be owned by Sekisui ("Sekisui Instruments"), while Qualigen shall retain ownership of instruments placed with customers under a rental program before the execution of this Agreement ("Qualigen Instruments") and any instruments (including FastPack® 2.0) placed by Qualigen to the Qualigen Retained Customers. 2.4. Qualigen Retained Customers. In addition to the retention of the Qualigen Instruments, Qualigen shall be permitted to continue selling the existing Qualigen products directly to the Qualigen Retained Customers. However, Qualigen shall not engage any distributors (whether exclusive or non-exclusive) other than Sekisui for the Qualigen Retained Customers. Sekisui shall not, and shall cause its subdistributors not to, market, rent or sell any Products to the Qualigen Retained Customers. 3. Supply; Orders 3.1. Supply. Qualigen shall supply Sekisui with all of Sekisui's commercial requirements for the Product in the Applicable Markets. All Products supplied by Qualigen to Sekisui shall have on the date of shipment by Qualigen a shelf life of not less than a minimum three (3) month shelf life for products shipped within the United States and not less than a minimum four (4) month shelf life for products shipped outside the United States (or such longer shelf-life as may be mutually agreed by Qualigen and a Sekisui customer with respect to a specific customer order). Qualigen shall use reasonable efforts to assure that the Products, as manufactured by Qualigen, conform to the applicable product specifications and requirements of the Regulatory Authorities in, and are manufactured in accordance with all Regulatory Approvals, laws and regulations applicable to the Products in the Applicable Markets. Qualigen shall maintain the necessary records to comply with all Regulatory Approvals and other applicable rules and regulations in the Applicable Markets. 3.2. Forecast. Sekisui shall submit to Qualigen by the fifth day of each calendar month a rolling twelve (12) month (month-by-month) forecast of the quantity of each Product that Sekisui anticipates selling during the following twelve (12) months (the "Forecast"). As to Reagent Kits each respective Forecast shall represent reasonable estimates to be used for planning and inventory stocking purposes as indicated in Exhibit D, and shall not be binding on Sekisui; provided, however, that as to Instruments the quantities for each of the first three months of each respective Forecast shall be deemed to constitute and shall constitute firm, binding orders for such quantities of Instruments in such respective months (but in no event for a lesser quantity for a month than the quantity for such month which, pursuant to an earlier Forecast, had
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Extract the exact clause related to "Irrevocable Or Perpetual License" from the excerpt above.