You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(Z)-3-[5-chloro-2-[2-(2-chloroanilino)-2-oxoethoxy]phenyl]-2-cyano-N-(2-methylphenyl)prop-2-enamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H19Cl2N3O3
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