Using O=C(CNC(=O)[C@H]1C[C@@H](C(=O)OCc2ccccc2)N1Cc1ccccc1)OCc1ccccc1 to produce O=C(O)CNC(=O)[C@H]1C[C@@H](C(=O)O)N1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.