Using CCOC(=O)c1c(-c2cccc([N+](=O)[O-])c2)cc(-c2ccccc2)nc1C, O=C1CCC(=O)N1Br to produce CCOC(=O)c1c(-c2cccc([N+](=O)[O-])c2)cc(-c2ccccc2)nc1CBr, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.