You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (4Z)-5-(3,4-dimethoxyphenyl)-4-[hydroxy-(3-methyl-4-phenylmethoxyphenyl)methylidene]-1-(2-methoxyethyl)pyrrolidine-2,3-dione into its molecular formula.
user
C30H31NO7
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