Cc1nc2c(=O)ncn(C)c2nc1C    mol4789    0_1
Cc1nc2c(=O)[nH+]cn(C)c2nc1C    mol4789    1_1
Cc1nc2c([nH+]c1C)c(=O)ncn2C    mol4789    1_2
Cc1nc2c(=O)ncn(C)c2[nH+]c1C    mol4789    1_3