140163-62-8

Spiro[2,6-dioxabicyclo[3.1.0]hexane-4,6'-[1H,6H]phenaleno[1,9a-c]furan]-3,3',7'(5'H,8'H)-trione,10'-(acetyloxy)-5'a,8'a,9',10',11',11'b-hexahydro-8'a,9'-dimethyl-, [5'aR-[5'aa,6'b(1R*,5S*),8'aa,9'a,10'a,11'aS*,11'bb]]-