Using [N-]=[N+]=[N-], CC(=O)O[C@@H](C(=O)OCc1cccnc1)C(C)(C)COS(=O)(=O)CCCCl to produce CC(=O)O[C@@H](C(=O)OCc1cccnc1)C(C)(C)COS(=O)(=O)CCCN=[N+]=[N-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.