You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (Z)-2-cyano-3-[4-[(3,4-dichlorophenyl)methoxy]phenyl]-N-(2-fluorophenyl)prop-2-enamide into molecular formula.
user
C23H15Cl2FN2O2
assistant