Using COC(=O)[C@H](Cc1ccc(O)cc1)NC(=O)OC(C)(C)C, O=C(OCc1ccccc1)N1CCC(O)CC1 to produce COC(=O)[C@H](Cc1ccc(OC2CCN(C(=O)OCc3ccccc3)CC2)cc1)NC(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.