You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N-[4-[2-[3-methoxy-4-(2-oxopyrrolidin-1-yl)anilino]-2-oxoethyl]phenyl]-1-benzofuran-2-carboxamide into molecular formula.
user
C28H25N3O5
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