4-(6-hydroxy-2,2-dimethyl-3a,5,6,6a-tetrahydrofuro[4,5-d][1, 3]dioxol-5-yl)-1,3-dioxolan-2-one

乙基 beta-D-吡喃葡萄糖苷

L-异亮氨酸

3-甲基-2-氧基戊酸

2,3-二羟基-3-甲基戊酸