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system
Name the molecular formula for the molecule established as (5R,7S)-5-(furan-2-yl)-N-[4-(propanoylamino)phenyl]-7-(trifluoromethyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidine-2-carboxamide using the IUPAC nomenclature.
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C21H20F3N5O3
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