You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[4-[(1-benzylimidazol-2-yl)methyl]piperazin-1-yl]-2-(4-fluorophenoxy)ethanone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H25FN4O2
assistant