You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named [7,11-bis(dicyanomethyl)-2,4,6,8,10,12,13-heptazatricyclo[7.3.1.05,13]trideca-1,3,5,7,9,11-hexaen-3-yl]-cyanocyanamide by IUPAC nomenclature, provide its molecular formula.
user
C14H2N14
assistant