You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name (4Z)-1-[2-(diethylamino)ethyl]-5-(furan-2-yl)-4-[hydroxy-(3-nitrophenyl)methylidene]pyrrolidine-2,3-dione into its molecular formula.
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C21H23N3O6
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