Using COc1ccc(N2CCN[C@@H](Cc3ccccc3)C2)cc1OC1CCCC1, CC(C)(C)OC(=O)NCC(=O)O to produce COc1ccc(N2CCN(C(=O)CNC(=O)OC(C)(C)C)[C@@H](Cc3ccccc3)C2)cc1OC1CCCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.