Using CO[C@@H](C(=O)O)c1ccccc1, O=C(Nc1cccc2c1CC(O)CC2)OCc1ccccc1 to produce CO[C@@H](C(=O)OC1CCc2cccc(NC(=O)OCc3ccccc3)c2C1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.