最佳答案
回答者:网友
O=C(C([H])([H])C([H])([H])C1C([H])=C([H])C(=C(C=1[H])O[H])O[H])N([H])C([H])([H])C([H])([H])C([H])([H])N([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])N([H])C([H])([H])C([H])([H])C([H])([H])N([H])C(C([H])([H])C([H])([H])C1C([H])=C([H])C(=C(C=1[H])O[H])O[H])=O