Using CC(C)(C)OC(=O)N[C@H]1CC[C@H](CN)CC1, Clc1ncc(Br)c(Cl)n1 to produce CC(C)(C)OC(=O)NC1CCC(CNc2nc(Cl)ncc2Br)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.