CNC(=O)c1ncnc2nc[nH]c12    mol4901    0_1
CNC(=O)c1nc[nH+]c2nc[nH]c12    mol4901    1_1
CNC(=O)c1ncnc2[nH+]c[nH]c12    mol4901    1_2
CNC(=O)c1[nH+]cnc2nc[nH]c12    mol4901    1_3
CNC(=O)c1ncnc2nc[n-]c12    mol4901    -1_1