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What is the molecular formula of the compound with this IUPAC name 9-phenyl-3-(1'-phenyl-9,9'-spirobi[xanthene]-3-yl)carbazole;9-phenyl-3-(3-phenyl-9,9'-spirobi[xanthene]-2'-yl)carbazole;9-phenyl-3-(4'-phenyl-9,9'-spirobi[xanthene]-2-yl)carbazole ?
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C147H93N3O6
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