You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule 3-(4-bromophenyl)-5-(2,6-dimethylphenyl)-3a,6a-dihydropyrrolo[3,4-d][1,2]oxazole-4,6-dione into molecular formula.
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C19H15BrN2O3
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