Using COc1c(Cl)cc([N+](=O)[O-])c(OC)c1[N+](=O)[O-] to produce COc1c(N)cc(Cl)c(OC)c1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.