You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 3-[3-(4-bromophenyl)-5-methyl-1,2-oxazole-4-carbonyl]-N-(2-hydroxyethyl)-N-methyl-2,3-dihydro-1H-pyrrole-5-carboxamide by IUPAC nomenclature, provide its molecular formula.
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C19H20BrN3O4
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