You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(E)-N-(2-chlorophenyl)-2-cyano-3-[3,5-dichloro-4-[(4-fluorophenyl)methoxy]phenyl]prop-2-enamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H14Cl3FN2O2
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