You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named 4-isocyano-10-methyl-1,6,8,10-tetrazatricyclo[7.4.0.02,7]trideca-2(7),3,5,8,12-pentaen-11-one is given. What is its corresponding molecular formula?
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C11H7N5O
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