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 4,5-dimethoxy-2-[[(1R,9S)-6-oxo-7,11-diazatricyclo[7.3.1.02,7]trideca-2,4-diene-11-carbonyl]amino]benzoic acid is given. What is its corresponding molecular formula?
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C21H23N3O6
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