Using O=C(CNC(=O)C1CCN(C(=O)OCc2ccccc2)CC1)c1ccc(Cl)cc1, O=C([O-])O to produce O=C(NC(CO)C(=O)c1ccc(Cl)cc1)C1CCN(C(=O)OCc2ccccc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.