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What is the molecular formula of the molecule identified by N-[4-(9,9-dimethylfluoren-2-yl)phenyl]-8,8,14,14-tetramethyl-N-phenyl-1-azapentacyclo[11.7.1.02,7.09,21.015,20]henicosa-2(7),3,5,9,11,13(21),15,17,19-nonaen-5-amine ?
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C51H44N2
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