You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 2-[[4-(3-chloro-4-methylphenyl)-5-pyridin-4-yl-1,2,4-triazol-3-yl]sulfanyl]-1-phenylethanone into molecular formula.
user
C22H17ClN4OS
assistant