Nc1nc(Cl)cnc1C=O    mol6773    0_1
Nc1nc(Cl)c[nH+]c1C=O    mol6773    1_1
Nc1[nH+]c(Cl)cnc1C=O    mol6773    1_2
[NH3+]c1nc(Cl)cnc1C=O    mol6773    1_3