Using O=C(NC1C(COC(=O)c2ccccc2)C1COC(=O)c1ccccc1)OCc1ccccc1 to produce O=C(NC1C(CO)C1CO)OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.