You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 4-methoxy-1,6-diazatetracyclo[7.6.1.05,16.010,15]hexadeca-3,5(16),6,8,10,12,14-heptaen-2-one by IUPAC nomenclature, provide its molecular formula.
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C15H10N2O2
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