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What is the molecular formula of the molecule 7-O-tert-butyl 4-O-(9H-fluoren-9-ylmethyl) 5-[1-[2-[3,3-bis(4-fluorophenyl)propanoylamino]-6-fluorophenyl]propan-2-yl]-4,7-diazaspiro[2.5]octane-4,7-dicarboxylate ?
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C50H50F3N3O5
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