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system
Provide the molecular formula for the IUPAC named substance 6-[5-chloro-4-(3,5-dimethylpyridin-2-yl)pyridin-2-yl]-N-phenyl-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-amine .
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C25H23ClN6
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