[H]OC1=C([H])C(=C(C(=O)O[C@]([H])(C([H])([H])OC(=O)C([H])([H])[H])[C@]([H])(OC(=O)C2=C(C([H])=C(O[H])C([H])=C2O[H])C([H])([H])[H])C([H])([H])OC(=O)C([H])([H])[H])C(O[H])=C1[H])C([H])([H])[H]