You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
12-bromo-5-oxa-10,14,16-triazatetracyclo[7.7.0.02,6.010,15]hexadeca-1(9),2(6),3,11,13,15-hexaene The above is the IUPAC name of a molecule. Write its molecular formula.
user
C12H8BrN3O
assistant