[H]OC1=C2C([H])=C([H])[C@@]([H])(O[H])[C@]([H])(OC(=C([H])[H])C(=O)OC([H])([H])C(=C([H])[H])[C@@]([H])(O[H])C(=O)C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H])[C@]2([H])C([H])([H])C1=O