You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (1R,8S)-11-bromo-11-prop-1-en-2-yl-3,6-diazatricyclo[6.2.1.02,7]undeca-2,4,6-triene-4,5-dicarbonitrile by IUPAC nomenclature, provide its molecular formula.
user
C14H11BrN4
assistant