Using O=C(O[C@@H](Cc1ccccc1)C(=O)CCC(=O)N1CCC[C@H]1C(=O)O)c1ccccc1 to produce O=C(CCC(=O)N1CCC[C@H]1C(=O)O)[C@H](Cc1ccccc1)OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.