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 [*****] Text omitted for confidential treatment. The redacted information has been excluded because it is both (i) not material and (ii) would be competitively harmful if publicly disclosed. GLOBAL MASTER SUPPLY AGREEMENT This Global Master Supply Agreement ("Agreement" or "Contract") is between ExxonMobil Chemical Company, a division of Exxon Mobil Corporation ("Seller"),on behalf of itself and in the interest of the ExxonMobil affiliates listed on Attachment B (each an "ExxonMobil Selling Affiliate" or "EMCC/A" or collectively, "ExxonMobil Selling Affiliates"), and West Pharmaceutical Services, Inc. ("Buyer"), on behalf of itself and the Buyer affiliates listed on Attachment C (each a "Buyer Affiliate" or "West/A" or collectively, "Buyer Affiliates"). PRODUCTS, QUANTITY, PRICE In accordance with the provisions of this Agreement, ExxonMobil Selling Affiliates agree to sell to Buyer Affiliates, and Buyer Affiliates agree to purchase from ExxonMobil Selling Affiliates, the following product(s) (collectively, "Product"): Products Quantity [Metric Tons / Year] Container PackageYear 2019 2020 2021 2022 2023 [*****] [*****] Minimum Maximum [*****] [*****] [*****] [*****] [*****] [*****] [*****] [*****] [*****] [*****] Leased metal crates [*****] [*****] [*****] [*****] [*****] [*****] Leased metal crates [*****] not defined Leased metal crates Subject to this Agreement's terms and conditions, Buyer Affiliates shall purchase and ExxonMobil Selling Affiliates shall sell the yearly minimum amount of Product amounts (in the aggregate) listed above. Buyer or Buyer Affiliates may request to purchase amounts over the Product maximum amounts per year, however, it shall be solely within Seller or any ExxonMobil Selling Affiliate's discretion whether and under which conditions to accommodate Buyer's request. Buyer Affiliates shall issue a purchase order(s), or call off order(s) when purchasing Product from ExxonMobil Selling Affiliates in writing pursuant to this Contract ("Purchase Order"). Such Purchase Order(s) shall specify (a) the quantity of Product, and (b) general date of delivery. All Purchase Orders agreed to be filled by an ExxonMobil Selling affiliate shall be deemed to be a separate agreement between the relevant ExxonMobil Selling Affiliate and the relevant Buyer Affiliate, incorporating the terms of this Contract. Notwithstanding anything to the contrary in the attachments ExxonMobil and the ExxonMobil Selling Affiliates shall not unreasonably reject any Purchase Order that otherwise complies with the terms of this Agreement. Purchase Order(s), order acknowledgements and similar form documents evidencing the purchase or sale of Products, including any terms and conditions contained or referenced therein, shall not supersede, add to or amend in any way this Contract. In the event of any conflict between the terms of this Contract and the terms of any Purchase Order, order acknowledgement or similar document the terms of this Contract shall prevail. [*****] PRICING For calendar years 2019, 2020, 2021, 2022 and 2023, the price of Products sold by Seller/ExxonMobil Selling Affiliates to Buyer/Buyer Affiliates will comprise the Base Price, the crude adjustment and the freight cost depending on Incoterms. Source: WEST PHARMACEUTICAL SERVICES INC, 8-K, 1/16/2020 Base price Requested delivery date 1.1.2019 - 28.2.2019: All [*****] grades except [*****]: [*****] $/t [*****]: [*****] $/t [*****]: [*****] $/t 1.3.2019 - 31.12.2019: All [*****] grades except [*****]: [*****] $/t [*****]: [*****] $/t [*****]: [*****] $/t 1.1.2020 - 31.12.2020: All [*****] grades except [*****]: [*****] $/t [*****]: [*****] $/t [*****]: [*****] $/t 1.1.2021 - 31.12.2021: All [*****] grades except [*****]: [*****] $/t [*****]: [*****] $/t [*****]: [*****] $/t 1.1.2022 - 31.12.2022: All [*****] grades except [*****]: [*****] $/t [*****]: [*****] $/t [*****]: [*****] $/t 1.1.2023 - 31.12.2023: All [*****] grades except [*****]: [*****] $/t [*****]: [*****] $/t [*****]: [*****] $/t [*****] Base prices listed above are non-delivered pricing (i.e., Ex-Works designated Exxon Affiliate location (see Attachment B) - Incoterms 2010 ("EXW") and does not include freight or insurance. Seller and Buyer shall meet on or before December 31, [*****] to assess the requirements for a price and/or volume adjustment in good faith on the price for Products sold by Seller/ExxonMobil Selling Affiliates to Buyer/Buyer Affiliates for years [*****] and [*****]. Notwithstanding anything to the contrary in Attachments A, G and H to this Agreement, the parties agree that any permitted adjustments to the price, freight or payment terms for Products sold hereunder will be governed by the terms of the Pricing and Payment Terms sections of this Agreement. Buyer Affiliates shall pay ExxonMobil's Selling Affiliates invoice(s) not later than the days set forth in Attachment E hereto. All invoices shall be paid in full by wire transfer in accordance with the invoice's instructions. Crude Trigger Clause Product price(s) shall be subject to the Average Brent crude oil price evolution (as further detailed
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Extract the exact clause related to "Minimum Commitment" from the excerpt above.