You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
14-(1,7,7-trimethyl-2-bicyclo[2.2.1]heptanyl)-12,14,16-triazahexacyclo[8.7.2.211,17.01,10.02,7.012,16]henicosa-2,4,6,18,20-pentaene-13,15-dione is the IUPAC name of a molecule. Please give its molecular formula.
user
C28H31N3O2
assistant