2-(甲基硫代)-2,4,6-环庚三烯-1-硫酮

(7-氧代-1-环庚并-1,3,5-三烯基)乙酸酯

2-羟基-3,5,7-三(吗啉-4-基甲基)环庚并-2,4,6-三烯-1-酮

环戊烯

5-hydroxybicyclo[3.2.2]nona-2,6,8-trien-4-one