You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-(4-methoxyphenyl)-1-[4-(3-methoxyphenyl)piperazin-1-yl]-3-pyrrol-1-ylpropan-1-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H29N3O3
assistant