Using CC(C)(C)OC(=O)N[C@@H](Cc1ccc(O)cc1)C(=O)O, O=C(OCc1ccccc1)N1CCCNCC1 to produce CC(C)(C)OC(=O)N[C@@H](Cc1ccc(O)cc1)C(=O)N1CCCN(C(=O)OCc2ccccc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.