[H]OC([H])([H])C1=C([H])/[C@@]2([H])[C@@]([H])(C([H])([H])C([H])([H])\C(=C([H])/C([H])([H])C\1([H])[H])C([H])([H])[H])[C@]2(C([H])([H])[H])C([H])([H])O[H]