You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule pyridin-4-yl-[4-(6-pyridin-4-yl-[1,2,4]triazolo[1,5-a]pyridin-2-yl)piperidin-1-yl]methanone into molecular formula.
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C22H20N6O
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