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For the molecule named 2-[[4-(furan-2-ylmethyl)-5-pyridin-3-yl-1,2,4-triazol-3-yl]sulfanyl]-N-[4-(trifluoromethoxy)phenyl]acetamide by IUPAC nomenclature, provide its molecular formula.
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C21H16F3N5O3S
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