You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(Z)-N-(3-chloro-4-methylphenyl)-2-cyano-3-[4-(diethylamino)-2-methylanilino]prop-2-enamide;chloride is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H25Cl2N4O-
assistant