Using COC(=O)c1ccc(NS(=O)(=O)c2ccc(S(C)(=O)=O)cc2)cc1 to produce CS(=O)(=O)c1ccc(S(=O)(=O)Nc2ccc(C(=O)O)cc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.