Using CC(C)(C)OC(=O)Nc1ccc(CC(=O)O)cc1, CCO[C@@H](Cc1ccc(O)cc1)C(=O)OCc1ccccc1 to produce CCO[C@@H](Cc1ccc(OC(=O)Cc2ccc(NC(=O)OC(C)(C)C)cc2)cc1)C(=O)OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.