Using [O-][I+3]([O-])([O-])[O-], O=[N+]([O-])c1cc(Br)ccc1/C=C/N1CCCC1 to produce O=Cc1ccc(Br)cc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.