Using Cc1cc2oc(C)c(-c3ccc(Cl)cc3Cl)n2n1, O=[N+]=O to produce Cc1nn2c(-c3ccc(Cl)cc3Cl)c(C)oc2c1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.