You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (4R)-1-(2,4-difluorophenyl)-3-methyl-4-(5-methylthiophene-2-carbonyl)-5,7-dihydro-4H-pyrazolo[3,4-b]pyridin-6-one into its molecular formula.
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C19H15F2N3O2S
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