Oc1c(F)c(F)c(O)c(F)c1F    mol30612    0_1
[O-]c1c(F)c(F)c(O)c(F)c1F    mol30612    -1_1
[O-]c1c(F)c(F)c([O-])c(F)c1F    mol30612    -2_1