Using CC(=O)OCc1nc2cc(Cl)c(C)cc2c(=O)[nH]1, O=C1CCC(=O)N1Br to produce CC(=O)OCc1nc2cc(Cl)c(CBr)cc2c(=O)[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.