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:
"""
a Neoforma Medical Product Listing on a VerticalNet Site. 1.55 VERTICALNET LINK shall mean a Link that contains a VerticalNet Mark and will take users of other Sites to a page of a VerticalNet Site. 1.56 VERTICALNET MARK shall mean any trademark, service mark, trade name, domain name, design or logo of VerticalNet. 1.57 VERTICALNET MEDICAL ONLINE COMMUNITIES shall mean the Sites located at www.edental.com, www.hospitalnetwork.com, www.medicaldesignonline.com, and www.nurses.com (or any successor Sites to any of the foregoing). 1.58 VERTICALNET MEDICAL PRODUCTS LISTING shall mean a VerticalNet Product Listing relating to a Medical Product that is not already listed on Neoforma Plan and Neoforma Shop. 1.59 VERTICALNET PRODUCT LISTING shall mean a Product Listing of VerticalNet for Medical Products or Laboratory Products, including any VerticalNet Product Listings made available hereunder by VerticalNet to Neoforma. 1.60 VERTICALNET PRODUCT SHOWCASE shall mean the "Product Showcase" portion of the VerticalNet Medical Online Communities. 1.61 VERTICALNET SITE shall mean any Site owned and operated by VerticalNet, including, but not limited to, the VerticalNet Medical Online Communities, the Co-Branded Sites and the Site located at www.verticalnet.com (or a successor Site to any of the foregoing). 5 6 2. MEDICAL PRODUCTS. 2.1 Within 30 days after the Effective Date, VerticalNet shall provide a copy of all VerticalNet Medical Product Listings for Used and Excess Medical Products existing as of the Effective Date to Neoforma for use on Neoforma Plan, Neoforma Shop and Neoforma Auction on an exclusive basis (even as to VerticalNet), to the extent VerticalNet has the right to do so. 2.2 Within 30 days after the Effective Date, VerticalNet shall provide a copy of all VerticalNet Medical Product Listings for New Medical Products existing as of the Effective Date to Neoforma for use on Neoforma Plan, Neoforma Shop and Neoforma Auction on an exclusive basis (even as to VerticalNet), to the extent VerticalNet has the right to do so. VerticalNet shall use commercially reasonable efforts to acquire consent from its customers to provide all VerticalNet Medical Product Listings for New Medical Products existing as of the Effective Date to Neoforma. 2.3 From time to time during the Term, VerticalNet shall provide a copy of all VerticalNet Medical Product Listings received by VerticalNet after the Effective Date to Neoforma as such Product Listings are made available to VerticalNet for use on Neoforma Plan, Neoforma Shop and Neoforma Auction on an exclusive basis (even as to VerticalNet), to the extent VerticalNet has the right to do so. VerticalNet shall use commercially reasonable efforts to acquire consent from its customers to provide all VerticalNet Medical Product Listings for New Medical Products received by VerticalNet after the Effective Date to Neoforma. 2.4 Notwithstanding the foregoing, VerticalNet's activities in connection with its "Storefronts" and "E-Commerce Centers" (as conducted today, in a fashion substantially similar to the manner in which such activities are conducted today or as otherwise mutually agreed upon by the parties, which agreement shall not be unreasonably withheld or delayed) shall not be considered to be a breach of Section 2.1 [MEDICAL PRODUCTS], 2.2 [MEDICAL PRODUCTS] or 2.3 [MEDICAL PRODUCTS]. 2.5 VerticalNet hereby grants Neoforma an exclusive license, even as to Source: NEOFORMA INC, S-1/A, 12/2/1999 VerticalNet, to use, modify, enhance, reproduce, display, perform and transmit the VerticalNet Medical Product Listings, subject to and in accordance with the terms, conditions and provisions of this Agreement, to the extent that VerticalNet has the right to do so. 2.6 Neoforma shall list each VerticalNet Product Listing on Neoforma Plan or Neoforma Shop or Neoforma Auction. The look-and-feel of the VerticalNet Product Listings as displayed on Neoforma Plan, Neoforma Shop and Neoforma Auction shall be substantially consistent with the look-and-feel of the other Medical Products Listings displayed on such Sites, unless otherwise agreed upon by the Parties. 2.7 VerticalNet shall add a Neoforma Link to each VerticalNet Buyer's Guide labeled "Neoforma Search" (or as otherwise mutually agreed upon by the Parties), substantially consistent with the prototype attached hereto as EXHIBIT B, which Links shall be as prominent as the other Links on such Sites. If a user of a VerticalNet Buyer's Guide clicks on such button, such user shall be linked to a Site containing a VerticalNet frame surrounding the appropriate search results on Neoforma Shop. As soon as is commercially reasonable, and in any event, no later that the first anniversary of the Effective Date, such search results shall only contain 6 7 Product Listings for New Medical Products. Notwithstanding the foregoing, if, at any time, Neoforma lists Used
"""

Extract the exact clause related to "License Grant" from the excerpt above.

assistant: VerticalNet, to use, modify, enhance, reproduce, display, perform and transmit the VerticalNet Medical Product Listings, subject to and in accordance with the terms, conditions and provisions of this Agreement, to the extent that VerticalNet has the right to do so.