You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 3,10-diazapentacyclo[11.7.0.02,10.04,9.014,19]icosa-1(13),2,4,6,8,11,14,16,18-nonaene by IUPAC nomenclature, provide its molecular formula.
user
C18H12N2
assistant