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-O-benzyl 3-O-methyl (3aR,8bR)-8b-(4-bromophenoxy)-2,3a-dihydro-1H-pyrrolo[2,3-b]indole-3,4-dicarboxylate is given. What is its corresponding molecular formula?
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C26H23BrN2O5
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