You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named N-[4-[(4R,5R)-5-(5-methyl-1-phenylpyrrol-2-yl)-4-pyridin-2-yl-2-sulfanylideneimidazolidin-1-yl]phenyl]acetamide by IUPAC nomenclature, provide its molecular formula.
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C27H25N5OS
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