33204-40-9 4-(Acetyloxy)decahydro-6a-hydroxy-8a-methyl-3,6-bis(methylene)oxireno(2,3)azuleno(4,5-b)furan-2(3H)-one Oxireno(2,3)azuleno(4,5-b)furan-2(3H)-one, 4-(acetyloxy)decahydro-6a-hydroxy-8a-methyl-3,6-bis(methylene)-