You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 4-[2,5-dimethyl-3-[(4R,5R)-3-[3-(2-methylanilino)-3-oxopropyl]-5-pyridin-2-yl-2-sulfanylideneimidazolidin-4-yl]pyrrol-1-yl]benzoic acid by IUPAC nomenclature, provide its molecular formula.
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C31H31N5O3S
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