You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 1-[4-[(2-chloro-6-fluorophenyl)methyl]piperazin-1-yl]-2-(4,6-dimethylpyrimidin-2-yl)sulfanylethanone .
user
C19H22ClFN4OS
assistant