You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3-methyl-6,8-dihydro-5H-[1,2,4]triazolo[4,3-a]pyrazin-7-yl)-[(3S)-1-pyridin-2-ylpiperidin-3-yl]methanone is the IUPAC name of a molecule. Please give its molecular formula.
user
C17H22N6O
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