You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(3S)-3-[4-[(4-chlorophenyl)methyl]piperazin-1-yl]pyrrolidin-1-yl]-quinolin-2-ylmethanone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C25H27ClN4O
assistant