You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-(2-chloro-4-fluorophenyl)-3-[1-(4-propylsulfonylpiperazin-1-yl)cyclohexyl]propan-1-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H32ClFN2O3S
assistant