Cn1n[nH+]c([N+](=O)[O-])n1    mol25323    1_1
Cn1nnc([N+](=O)[O-])[nH+]1    mol25323    1_2
Cn1nc([N+](=O)[O-])n[nH+]1    mol25323    1_3
Cn1n[nH+]c([N+](=O)[O-])[nH+]1    mol25323    2_1
Cn1[nH+]nc([N+](=O)[O-])[nH+]1    mol25323    2_2
Cn1nc([N+](=O)[O-])[nH+][nH+]1    mol25323    2_3