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system
Provide the molecular formula for the IUPAC named substance 6-(1,1-difluoroethyl)-N-methyl-N-[3-[4-(trifluoromethyl)phenyl]pyrazolo[1,5-a]pyridin-5-yl]-2,3-dihydropyridine-3-carboxamide .
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C23H19F5N4O
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