You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named (4S,5S)-1-(3-chloro-4-methoxyphenyl)-4-pyridin-2-yl-5-[1-[3-(trifluoromethyl)phenyl]pyrrol-2-yl]imidazolidine-2-thione by IUPAC nomenclature, provide its molecular formula.
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C26H20ClF3N4OS
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