Using Cc1ccccc1S(=O)(=O)OC1=C(C(=O)OCc2ccccc2)N2C(=O)C(C(C)O)C2C1 to produce Cc1ccccc1S(=O)(=O)OC1=C(C(=O)[O-])N2C(=O)C(C(C)O)C2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.