最佳答案
回答者：网友
O([H])C1([H])C([H])([H])[C@@]2(C([H])([H])[H])C3=C([H])C([H])([H])C4([H])C(C([H])([H])[H])(C([H])([H])[H])C(C([H])([H])C([H])([H])[C@]4(C([H])([H])[H])C3=C([H])C([H])([H])[C@]2(C([H])([H])[H])C1([H])C([H])(C(=O)O[H])C([H])([H])C([H])([H])C(=C([H])[H])C([H])(C([H])([H])[H])C([H])([H])[H])=O
