You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4,7,11-triazaoctacyclo[15.14.0.02,14.03,7.08,13.018,30.019,27.020,25]hentriaconta-1(17),2(14),3,5,8(13),9,11,15,18(30),19(27),20,22,24,28-tetradecaene is the IUPAC name of a molecule. Please give its molecular formula.
user
C28H17N3
assistant