Using COC(=O)C(Br)CC(C)C, CC(C)(C)OC(=O)N1CCN(C(=O)c2ccc(C(O)c3ccccc3)cc2)CC1 to produce COC(=O)C(CC(C)C)OC(c1ccccc1)c1ccc(C(=O)N2CCN(C(=O)OC(C)(C)C)CC2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.