Using CC(=O)O[C@]1(C(C)=O)CC[C@H]2[C@@H]3[C@@H](OS(C)(=O)=O)[C@@H](OS(C)(=O)=O)C4=CC(=O)CC[C@]4(C)[C@H]3CC[C@@]21C, [N-]=[N+]=[N-] to produce CC(=O)O[C@]1(C(C)=O)CC[C@H]2[C@@H]3C=C(N=[N+]=[N-])C4=CC(=O)CC[C@]4(C)[C@H]3CC[C@@]21C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.