You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-(5-chloro-2-methylphenyl)-N-[4-(4-fluorophenyl)oxan-4-yl]-5-oxopyrrolidine-3-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H24ClFN2O3
assistant