Oc1nc(O)nc(Cl)n1    mol25744    0_1
[O-]c1nc(O)[nH+]c(Cl)n1    mol25744    0_2
[O-]c1nc(O)nc(Cl)n1    mol25744    -1_1
[O-]c1nc([O-])nc(Cl)n1    mol25744    -2_1