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