You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named (4Z)-5-[4-(diethylamino)phenyl]-1-[4-(dimethylamino)phenyl]-4-[hydroxy(5,6,7,8-tetrahydronaphthalen-2-yl)methylidene]pyrrolidine-2,3-dione by IUPAC nomenclature, provide its molecular formula.
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C33H37N3O3
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