You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 12-hydroxy-14,16-dimethyl-2-oxa-5-azatetracyclo[11.4.0.01,5.06,11]heptadeca-6,8,10,14,16-pentaen-4-one by IUPAC nomenclature, provide its molecular formula.
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C17H17NO3
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