Showing structure for (2s,4ar,4br,6ar,6bs,8as,12as,14ar,14br,16as)-4a,6a,6b,11,11,14b-hexamethyl-2-[(1r,2s,3s)-1,2,3,4-tetrahydroxybutyl]-2h,4h,4bh,5h,6h,7h,8h,9h,10h,12h,12ah,14h,14ah,15h,16h,16ah-piceno[3,4-d][1,3]dioxine-8a-carboxylic acid