Showing structure for 6-[(3ar,6s,9br)-6-(2-carboxyethyl)-3a,6,9b-trimethyl-7-(prop-1-en-2-yl)-1h,2h,3h,4h,5h,7h,8h,9h-cyclopenta[a]naphthalen-3-yl]-2-methylhept-2-enoic acid