You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 1-(14-oxa-2-azatetracyclo[13.4.0.02,7.08,13]nonadeca-1(19),6,8,10,12,15,17-heptaen-6-yl)ethanone into molecular formula.
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C19H17NO2
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