You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-[(E)-3-[3-[2-(2-chloroanilino)-2-oxoethyl]sulfanylanilino]-1-(2,4-dichlorophenyl)-3-oxoprop-1-en-2-yl]benzamide by IUPAC nomenclature, provide its molecular formula.
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C30H22Cl3N3O3S
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