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 13-methyl-14-(2-methylphenyl)-11-oxa-13-azoniatetracyclo[8.7.0.02,7.012,17]heptadeca-1(10),2,4,6,8,12(17),13,15-octaene is given. What is its corresponding molecular formula?
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C23H18NO+
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