You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(1-methylpyrazol-4-yl)-[4-(2H-pyrazolo[3,4-b]pyrazin-3-yl)piperidin-1-yl]methanone is the IUPAC name of a molecule. Please give its molecular formula.
user
C15H17N7O
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