Using COC(=O)C(CCc1ccccc1)CC(=O)O, O=C1N[C@H](Cc2ccccc2)CO1 to produce COC(=O)C(CCc1ccccc1)CC(=O)N1C(=O)OCC1Cc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.