[H]OC1=C(C(O[H])=C2OC3=C(C(OC([H])([H])[H])=C([H])C(=C3C(=O)OC([H])([H])[H])C([H])([H])[H])C([H])([H])O[C@@]3([H])OC(=O)C1=C23)C([H])([H])[H]