You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name [2-(4-bromophenyl)-2-oxoethyl] (2R)-2-[(1R,2S,6S,7R)-3,5-dioxo-4-azatricyclo[5.2.1.02,6]dec-8-en-4-yl]propanoate into its molecular formula.
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C20H18BrNO5
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