trans 5-methoxy-2,3,4,5-tetramethylcyclopent-2-enone

1,2,3,4,5-pentamethyl-5-methylsulfanylcyclopenta-1,3-diene

5-(methylsulfinyl)-1,2,3,4,5-pentamethylcyclopentadiene

2,6-二甲基吡啶

1,2,3,4,5-pentamethylcyclopenta-2,4-dien-1-ol