You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 1-[4-[3,5-dichloro-4-[(1,3,5-trimethylpyrazol-4-yl)methylsulfonyl]phenyl]pyridin-2-yl]piperazine .
user
C22H25Cl2N5O2S
assistant