Using CN1C(C(=O)Nc2ccccn2)=C(O)c2ccccc2S1(=O)=O to produce CN1C(C(=O)Nc2ccccn2)=C([O-])c2ccccc2S1(=O)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.