最佳答案
回答者：网友
O([H])C(C1C([H])=C([H])C(=C([H])C=1[H])C1C2C([H])=C([H])C(=C(C3C([H])=C([H])C(C(=O)O[H])=C([H])C=3[H])C3=C([H])C([H])=C(C(C4C([H])=C([H])C(C(=O)O[H])=C([H])C=4[H])=C4C([H])=C([H])C(C(C5C([H])=C([H])C(C(=O)O[H])=C([H])C=5[H])=C5C([H])=C([H])C=1N5[H])=N4)N3[H])N=2)=O |c:20,86,t:58,80|
