Showing structure for methyl 3-[(3s,3ar,5as,6s,7s,9ar,9br)-3-[(2s,5s)-5-(acetyloxy)-2-hydroxy-6-methylhept-6-en-2-yl]-6,9a,9b-trimethyl-7-(prop-1-en-2-yl)-decahydrocyclopenta[a]naphthalen-6-yl]propanoate