Showing structure for 5-(acetyloxy)-6-[6-(2-methoxy-2-oxoethyl)-1,5,5-trimethyl-4-oxocyclohex-2-en-1-yl]-3a-methyl-4-[(2-methylbutanoyl)oxy]-7-methylidene-hexahydroindeno[1,7a-b]oxirene-3-carboxylic acid