Showing structure for {[1-(5-ethyl-6-methylhept-3-en-2-yl)-9a,11a-dimethyl-1h,2h,3h,3ah,3bh,4h,6h,7h,8h,9h,9bh,10h,11h-cyclopenta[a]phenanthren-7-yl]oxy}trimethylsilane