2-[7-(4-甲氧基苯甲酰基)-2-甲基-1H-吲哚-3-基]乙酸

1,3-环戊二酮

乙酰丙烯酸甲酯

(R)-γ-Methyl-γ-butyrolactone

(R)-(-)-γ-hydroxy-γ-methylbutyric acid methylester