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What is the molecular formula of the molecule ethane;N-[4-(10-methylidene-9-phenyl-9-azatetracyclo[9.7.1.03,8.015,19]nonadeca-1(18),3(8),4,6,11,13,15(19),16-octaen-5-yl)phenyl]-9,9-diphenyl-N-(4-phenylphenyl)fluoren-2-amine ?
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C70H54N2
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