You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4,4,8,8-tetramethyl-6-pyridin-4-yl-2-azatricyclo[5.1.0.03,5]octa-1,3(5),6-triene The above is the IUPAC name of a molecule. Write its molecular formula.
user
C16H16N2
assistant