Showing structure for (4ar,5s,6as,6br,8ar,12ar,12br,14bs)-2,2,6a,6b,9,9,12a-heptamethyl-5-[(3-methylbut-2-enoyl)oxy]-10-oxo-3,4,5,6,7,8,8a,11,12,12b,13,14b-dodecahydro-1h-picene-4a-carboxylic acid