You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 3,5,8,10,12-pentazatricyclo[7.4.0.02,6]trideca-1(9),2(6),3,12-tetraene-7,11-dione by IUPAC nomenclature, provide its molecular formula.
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C8H5N5O2
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