Using CC(C)(C)OC(=O)N1CCCNCC1, CC(C)(C)c1ccc(Br)cc1 to produce CC(C)(C)OC(=O)N1CCCN(c2ccc(C(C)(C)C)cc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.