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system
Name the molecular formula for the molecule established as N-(4-chlorophenyl)-5-[(2S)-1-[[2-(trifluoromethyl)phenyl]carbamoyl]pyrrolidin-2-yl]-1,3,4-thiadiazole-2-carboxamide using the IUPAC nomenclature.
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C21H17ClF3N5O2S
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