Using CC(C)(C)OC(=O)N1CCNCC1, O=C(N[C@@H](Cc1ccc(O)cc1)C(=O)O)OCc1ccccc1 to produce CC(C)(C)OC(=O)N1CCN(C(=O)[C@H](Cc2ccc(O)cc2)NC(=O)OCc2ccccc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.