Using [N-]=[N+]=N[C@H]1C=C[C@@H](O)C1, CC(C)(C)OC(=O)CBr to produce CC(C)(C)OC(=O)CO[C@@H]1C=C[C@H](N=[N+]=[N-])C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.