You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl 3-[(4E)-4-[hydroxy-(4-methoxy-2,5-dimethylphenyl)methylidene]-2,3-dioxo-5-phenylpyrrolidin-1-yl]benzoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C28H25NO6
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