You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(Z)-2-cyano-N-(2,3-dichlorophenyl)-3-(2,5-dimethyl-1-naphthalen-1-ylpyrrol-3-yl)prop-2-enamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C26H19Cl2N3O
assistant