You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(1S,5S)-6-[(6-chloropyridin-3-yl)methyl]-1,3,3-trimethyl-6-azabicyclo[3.2.1]octane is the IUPAC name of a molecule. Please give its molecular formula.
user
C16H23ClN2
assistant