You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl 3-[4-carbamoyl-3-(4-methoxyphenyl)-5-methyl-1-(2-phenylethyl)pyrrol-2-yl]propanoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H28N2O4
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