You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name 2-[[5-(4-chlorophenyl)-4-(3-methoxypropyl)-1,2,4-triazol-3-yl]sulfanyl]-1-(5-chlorothiophen-2-yl)ethanone ?
user
C18H17Cl2N3O2S2
assistant