You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
8-oxa-3,6-diazatetracyclo[10.4.0.02,6.07,11]hexadeca-1(16),2,4,7(11),9,12,14-heptaene is the IUPAC name of a molecule. Please give its molecular formula.
user
C13H8N2O
assistant