Using [N-]=[N+]=[N-], O=C(CCl)Nc1ccc(S(=O)(=O)c2cccc(Cl)c2)cc1 to produce [N-]=[N+]=NCC(=O)Nc1ccc(S(=O)(=O)c2cccc(Cl)c2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.