CNc1nc(C)nc2c1cnn2C    mol4944    0_1
CNc1nc(C)[nH+]c2c1cnn2C    mol4944    1_1
CNc1nc(C)nc2c1c[nH+]n2C    mol4944    1_2
CNc1[nH+]c(C)nc2c1cnn2C    mol4944    1_3
C[NH2+]c1nc(C)nc2c1cnn2C    mol4944    1_4