You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 5-methoxy-14-oxo-15-oxa-11-azatetracyclo[10.2.1.02,11.03,8]pentadeca-1,3(8),4,6,12-pentaene-13-carboxylic acid by IUPAC nomenclature, provide its molecular formula.
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C15H11NO5
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