Using CCOC(=O)c1c(C)nc(Br)n1CC(=O)Nc1c(C)cc(C)cc1C to produce CCOC(=O)c1c(C)nc2n1CC(=O)N2c1c(C)cc(C)cc1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.