You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 4-bromo-2-(4-chlorophenyl)-1-(2-methoxyacetyl)-5-(trifluoromethyl)pyrrole-3-carbonitrile by IUPAC nomenclature, provide its molecular formula.
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C15H9BrClF3N2O2
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