[CH2-][n+]1cnc2[nH]cnc2c1N    mol29505    0_1
C[n+]1cnc2[nH]cnc2c1[NH-]    mol29505    0_2
C[n+]1cnc2[n-]cnc2c1N    mol29505    0_3
C[n+]1cnc2[nH]cnc2c1N    mol29505    1_1