You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(1H-benzimidazol-2-yl)-4-[2-(4-fluorophenyl)ethyl]-5-piperidin-4-yl-1H-pyrazol-3-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H24FN5O
assistant