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system
Name the molecular formula for the molecule established as 4-[(6-chloropyrazolo[1,5-a]pyridin-5-yl)amino]-N-(2,2-difluoroethyl)-N-methyl-5,6,7,8-tetrahydro-[1]benzothiolo[2,3-d]pyrimidine-7-carboxamide using the IUPAC nomenclature.
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C21H19ClF2N6OS
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