O=[N+]([O-])c1ccc(O)c([N+](=O)[O-])n1 mol37579 0_1 O=[N+]([O-])c1ccc([O-])c([N+](=O)[O-])[nH+]1 mol37579 0_2 O=[N+]([O-])c1ccc([O-])c([N+](=O)[O-])n1 mol37579 -1_1