Using CC(C)(C)OC(=O)N1CCC[C@@H](Nc2ncccc2Cl)C1, O=C(Cl)c1ccc(Br)cc1 to produce CC(C)(C)OC(=O)N1CCC[C@@H](N(C(=O)c2ccc(Br)cc2)c2ncccc2Cl)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.