You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[3-chloro-4-(difluoromethoxy)phenyl]-2-[[5-[1-(2-fluorophenoxy)ethyl]-1,3,4-oxadiazol-2-yl]sulfanyl]acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H15ClF3N3O4S
assistant