[H]O[C@]1([H])C([H])([H])[C@@]([H])(C2=C([H])OC([H])=C2[H])[C@]2(C([H])([H])[H])C([H])([H])C([H])([H])[C@@]([H])([C@]3(O[C@@]123)C([H])([H])[H])[C@]1(C([H])=C([H])C(=O)OC(C([H])([H])[H])(C([H])([H])[H])[C@]1([H])[C@]([H])(OC(=O)C([H])([H])[H])C(=O)OC([H])([H])[H])C([H])([H])[H]