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Under IUPAC nomenclature, a molecule named N-[4-(9-oxa-14-thiapentacyclo[11.7.0.02,10.03,8.015,20]icosa-1(13),2(10),3(8),4,6,11,15,17,19-nonaen-5-yl)phenyl]-N,9,9-triphenylfluoren-2-amine is given. What is its corresponding molecular formula?
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C55H35NOS
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