3-(二甲基氨基)-1-(4-甲氧基苯基)-2-丙烯-1-酮

dimethyl 7-oxabicyclo[2.2.1]hepta-2(3),5(6)-diene-2,3-dicarboxylate

4-methoxybenzonitrile oxide

二甲基双环[2.2.1]-2,5-庚二烯-2,3-二羧酸

7-isopropylidene-2,3-dicarbomethoxynorbornadiene