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What is the molecular formula of the compound with this IUPAC name N-(9,9-dimethylfluoren-2-yl)-N-spiro[fluorene-9,2'-tricyclo[9.4.0.03,8]pentadeca-1(15),3,5,7,11,13-hexaene]-2-yldibenzothiophen-2-amine ?
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C54H39NS
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