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system
Provide the molecular formula for the IUPAC named substance 1-[2-pyridin-4-yl-4-(1H-1,2,4-triazol-5-ylmethylamino)-6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-7-yl]ethanone .
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C17H18N8O
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