You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
8-nitro-3-oxatricyclo[7.3.1.05,13]trideca-1(12),5(13),6,8,10-pentaene-2,4-dione The above is the IUPAC name of a molecule. Write its molecular formula.
user
C12H5NO5
assistant