最佳答案
回答者：网友
O=C1C([H])([H])C([H])([H])[C@@]2(C([H])([H])[H])[C@@]([H])(C1(C([H])([H])[H])C([H])([H])[H])C([H])([H])C([H])([H])C1=C2C([H])([H])C([H])([H])[C@@]2(C([H])([H])[H])C([H])([C@@]([H])(C(=O)O[H])C([H])([H])C([H])([H])/C(/[H])=C(\C([H])([H])[H])/C([H])([H])[H])C([H])([H])C([H])([H])[C@@]21C([H])([H])[H]
