[H]OC1(C(=O)C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H])[C@]([H])(OC(=O)C([H])([H])[H])C([H])=C([H])[C@@]1([H])OC(=O)C([H])([H])[H]