You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name 3-bromo-5-[1-(oxan-4-yl)piperidin-4-yl]-N-(pyridin-3-ylmethyl)pyrazolo[1,5-a]pyrimidin-7-amine into its molecular formula.
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C22H27BrN6O
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