Using [N-]=[N+]=[N-], COc1ccc2c(c1)CC[C@@H]1[C@@H]2CC[C@]2(C)C[C@H](Br)C[C@@H]12 to produce COc1ccc2c(c1)CC[C@@H]1[C@@H]2CC[C@]2(C)C[C@@H](N=[N+]=[N-])C[C@@H]12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.