Using CC(C)(C)OC(=O)NCCO, COC(=O)[C@H](NC(=O)OCC1c2ccccc2-c2ccccc21)c1ccc(O)cc1 to produce COC(=O)[C@H](NC(=O)OCC1c2ccccc2-c2ccccc21)c1ccc(OCCNC(=O)OC(C)(C)C)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.