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-(4-fluorophenyl)-1,4-diazepan-1-yl]-2-(2-thiophen-2-yl-1,3-thiazol-4-yl)ethanone ?
user
C20H20FN3OS2
assistant