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What is the molecular formula of the molecule 4-[2-[1-(2,2-difluoroethylamino)-1-oxopropan-2-yl]oxy-4-fluoroanilino]-5-methyl-N-(methyl-methylidene-oxo-lambda6-sulfanyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide ?
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C21H23F3N6O4S
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