[O-]c1c(C(F)(F)F)ccc2ccc[nH+]c12 mol2155 0_1 Oc1c(C(F)(F)F)ccc2cccnc12 mol2155 0_2 Oc1c(C(F)(F)F)ccc2ccc[nH+]c12 mol2155 1_1 [O-]c1c(C(F)(F)F)ccc2cccnc12 mol2155 -1_1