最佳答案
回答者:网友
O([H])C1([H])C([H])([H])C2=C3C([H])(C([H])([H])[H])C([H])([H])[C@]([H])(C([H])(C(C([H])([H])[H])(C([H])([H])[H])O[H])O[H])O[C@]3([H])C([H])([H])[C@]2(C([H])([H])[H])[C@@]2(C([H])([H])[H])C([H])([H])C([H])([H])[C@]3([H])C(C([H])([H])[H])(C([H])([H])[H])C(C([H])([H])C([H])([H])[C@]3(C([H])([H])[H])[C@]21[H])=O