Showing structure for (3z,3as,5ar,7s,9ar,9bs)-3-{4-[(1s,2r,3s,5r)-2,3-dihydroxy-2-methyl-5-(prop-1-en-2-yl)cyclopentyl]but-3-en-2-ylidene}-3a,6,6,9a-tetramethyl-2-oxo-octahydrocyclopenta[a]naphthalen-7-yl acetate