You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 4-methyl-2-[1-(pyridine-2-carbonyl)piperidin-2-yl]-8-(pyridin-2-ylmethyl)-5,6-dihydropyrido[2,3-d]pyrimidin-7-one by IUPAC nomenclature, provide its molecular formula.
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C25H26N6O2
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