You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (E)-2-cyano-3-[1-[(2,4-dichlorophenyl)methyl]-2-methylindol-3-yl]-N-[(1S)-1-phenylethyl]prop-2-enamide into its molecular formula.
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C28H23Cl2N3O
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