You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 1-(4-fluorophenyl)-2-[[4-(2-methylpropyl)-5-morpholin-4-yl-1,2,4-triazol-3-yl]sulfanyl]ethanone ?
user
C18H23FN4O2S
assistant