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 (Z)-3-(2,3-dibromo-4-hydroxy-5-methoxyphenyl)-2-(6-methoxy-1H-benzimidazol-2-yl)prop-2-enenitrile is given. What is its corresponding molecular formula?
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C18H13Br2N3O3
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