1',8',8'-trimethylspiro[1,3-dioxolane-2,2'-bicyclo[3.2.1]oct-6-ene] AIDS141698 NSC657820 Spiro[bicyclo[3.2.1]oct-6-ene-2,2'-[1,3]dioxolane], 1,8,8-trimethyl- NCI60_020163 (1S)-(+)-Spiro[1.8.8-trimethylbicyclo[3.2.1]oct-6-ene-2,2'-[1,3]-dioxolane] AIDS-141698