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-benzylpiperazin-1-yl)-2-[[6-(trifluoromethyl)-[1,2,4]triazolo[4,3-a]pyridin-3-yl]sulfanyl]ethanone .
user
C20H20F3N5OS
assistant