Using O=C(O)c1cccc(S(=O)(=O)Cl)c1, O=C(O)c1ccccc1S(=O)(=O)Cl to produce O=C([O-])c1cccc(S(=O)(=O)O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.