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