Using O=[N+]=O, CCc1cc2cccc(-c3ccc(Cl)cc3Cl)n2n1 to produce CCc1nn2c(-c3ccc(Cl)cc3Cl)cccc2c1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.