Using CC(C)(C)OC(=O)N1CCC(CBr)CC1, COC(=O)c1ccc(Br)cn1 to produce COC(=O)c1ccc(CC2CCN(C(=O)OC(C)(C)C)CC2)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.