Using [N-]=[N+]=[N-], Cc1cccc(NC(=O)c2cccc(CCl)c2)c1C to produce Cc1cccc(NC(=O)c2cccc(CN=[N+]=[N-])c2)c1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.