You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[1-(furan-2-ylmethyl)-2,5-dimethylpyrrol-3-yl]-2-[4-[(4-methoxyphenyl)methyl]piperazin-1-yl]ethanone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C25H31N3O3
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