[H]O[C@@]1([H])C([H])=C([H])C2(OC3=C([H])C([H])=C([H])C4=C([H])C([H])=C([H])C(O2)=C34)[C@]2([H])[C@]([H])(O[H])C([H])=C([H])[C@]([H])(OC(=O)C([H])([H])[H])[C@@]12[H]