You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[[7-(4-cyanophenyl)-1,3-benzothiazol-6-yl]sulfanyl-(5-fluoropyridin-2-yl)methyl]propanamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H17FN4OS2
assistant