You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named (4E)-1-[2-(diethylamino)ethyl]-4-[hydroxy-(5-methyl-1-phenylpyrazol-4-yl)methylidene]-5-(3-nitrophenyl)pyrrolidine-2,3-dione by IUPAC nomenclature, provide its molecular formula.
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C27H29N5O5
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