You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[4-[[2-[6-[(4-chlorophenyl)methyl]pyridin-2-yl]pyrrolidin-1-yl]methyl]phenyl]acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C25H26ClN3O
assistant