[H]OC1=C([H])C(=C([H])C(=C1O[H])[C@@]1(C([H])([H])[H])C([H])([H])C([H])([H])C([H])([H])C1(C([H])([H])[H])C([H])([H])[H])C([H])([H])OC([H])([H])[H]