You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 7-hydroxy-8,10-dinitro-3-oxatricyclo[7.3.1.05,13]trideca-1(13),5,7,9,11-pentaene-2,4-dione .
user
C12H4N2O8
assistant