Clc1ccc2nsnc2c1NC1=NCCN1    mol2270    0_1
Clc1ccc2ns[nH+]c2c1NC1=NCCN1    mol2270    1_1
Clc1ccc2[nH+]snc2c1NC1=NCCN1    mol2270    1_2
Clc1ccc2nsnc2c1NC1=[NH+]CCN1    mol2270    1_3