You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-[(E)-1-(2,5-dimethoxyphenyl)-3-[3-[2-(3-methylanilino)-2-oxoethyl]sulfanylanilino]-3-oxoprop-1-en-2-yl]benzamide by IUPAC nomenclature, provide its molecular formula.
user
C33H31N3O5S
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