[H]\C(CC[C@@]([H])(C)[C@@]1([H])CC[C@@]2([H])[C@]3([H])[C@@]([H])(O)C[C@]4([H])C[C@]([H])(O)CC[C@]4(C)[C@@]3([H])CC[C@]12C)=C(\C)C(O)=O