Using CI, O=[N+]([O-])c1ccc(Oc2ccc3[nH]ncc3c2)nc1 to produce Cn1ncc2cc(Oc3ccc([N+](=O)[O-])cn3)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.