C[C@@H]4C[C@H]3[C@@H]2CCC1=CC(O)=CC[C@]1(C)[C@@]2(F)[C@@H](O)C[C@]3(C)[C@@]4(O)C(=O)CO DEX_A1999_1P93 2.823 97.983 28 394.483 5 4 0 2 363.906