You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-(difluoromethyl)-1-(3,5-difluoro-4-methylsulfonylphenyl)-5-(3,5-dimethylphenyl)pyrazole is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H16F4N2O2S
assistant