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system
Name the molecular formula for the molecule established as (7S)-7-methyl-N-(2-methylpyridin-3-yl)-4-oxo-5-[4-(trifluoromethyl)phenyl]-6,7-dihydropyrazolo[1,5-a]pyrazine-3-carboxamide;sulfane using the IUPAC nomenclature.
user
C21H20F3N5O2S
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