You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 6-methyl-2-[2-(2-methylpropyl)-5,7-dihydropyrrolo[3,4-d]pyrimidin-6-yl]pyridine-3-carboxamide into its molecular formula.
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C17H21N5O
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