[H]O[C@]1([H])C([H])=C(C#CC(=C([H])[H])C([H])([H])C([H])([H])C([H])=C(C([H])([H])[H])C([H])([H])[H])C(=O)[C@@]([H])(O[H])[C@]1([H])OC([H])([H])[H]