You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 2-[3-[(2,4-dichlorophenyl)methyl]-2,7-dimethylbenzimidazol-5-yl]-3-methylpyridine-4-carboxylic acid by IUPAC nomenclature, provide its molecular formula.
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C23H19Cl2N3O2
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