Using Oc1ccccc1, O=[N+]([O-])c1ccc(-c2nc3ccccc3o2)cc1 to produce c1ccc(Oc2ccc(-c3nc4ccccc4o3)cc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.