You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[6-(2-azabicyclo[2.2.1]heptan-2-yl)-5-chloropyridin-3-yl]-piperidin-1-ylmethanone is the IUPAC name of a molecule. Please give its molecular formula.
user
C17H22ClN3O
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