Cn1c[nH+]c([N+](=O)[O-])c1CC(=O)NN    mol6672    1_1
Cn1cnc([N+](=O)[O-])c1CC(=O)N[NH3+]    mol6672    1_2
Cn1c[nH+]c([N+](=O)[O-])c1CC(=O)N[NH3+]    mol6672    2_1