Showing structure for 3-[(3s,3ar,5ar,6r,7s,9br)-3-[(2r,5s)-5-(2-hydroxypropan-2-yl)-2-methyloxolan-2-yl]-6,9a,9b-trimethyl-7-(prop-1-en-2-yl)-decahydrocyclopenta[a]naphthalen-6-yl]propanoic acid