Using [N-]=[N+]=[N-], COC1=N[C@H](C(C)C)C(OC)=N[C@H]1CCCCBr to produce COC1=N[C@H](C(C)C)C(OC)=N[C@H]1CCCCN=[N+]=[N-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.