Using [O-][I+3]([O-])([O-])[O-], CN(C)/C=C/c1cc(Cl)ncc1[N+](=O)[O-] to produce O=Cc1cc(Cl)ncc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.