Using CC(C)(C)OC(=O)N1CCC(NC(=O)[C@H](CCO)Oc2ccc(Br)nc2)CC1 to produce CC(C)(C)OC(=O)N1CCC(N2CC[C@H](Oc3ccc(Br)nc3)C2=O)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.