You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[5-(4-fluorophenyl)thiophen-2-yl]-N-[2-oxo-2-[4-(1,2,4-triazol-1-yl)anilino]ethyl]prop-2-enamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H18FN5O2S
assistant