You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[5-[2-[2-(dimethylamino)ethoxy]phenyl]-6-ethyl-11-azatricyclo[5.3.1.04,11]undeca-1,3,5,7,9-pentaen-2-yl]phenol The above is the IUPAC name of a molecule. Write its molecular formula.
user
C28H28N2O2
assistant