You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name (7R)-7-hydroxy-1,3-dimethyl-9-(3-methylphenyl)-7,8-dihydro-6H-purino[7,8-a]pyrimidine-2,4-dione into its molecular formula.
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C17H19N5O3
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