Cc1n[nH]c([N+](=O)[O-])n1    mol25314    0_1
Cc1n[nH]c([N+](=O)[O-])[nH+]1    mol25314    1_1
Cc1nc([N+](=O)[O-])[nH][nH+]1    mol25314    1_2
Cc1n[n-]c([N+](=O)[O-])n1    mol25314    -1_1