Showing structure for (2r,3r,3as,4r,6s,7r,12r,13ar)-2,3,4,6,13a-pentakis(acetyloxy)-2,9,9,12-tetramethyl-5-methylidene-8,13-dioxo-1h,3h,3ah,4h,6h,7h,12h-cyclopenta[12]annulen-7-yl 2-methylbutanoate