You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name benzyl (4R)-4-[2-(4-bromo-2-methylanilino)-2-oxoethyl]-5-oxo-1,3-oxazolidine-3-carboxylate into its molecular formula.
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C20H19BrN2O5
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