11H,13H-Oxireno[d]pyrano[4',3':3,3a]isobenzofuro- [5,4-f][2]benzopyran-4,6,13(2H,5aH)-trione,8- (2,5-dihydro-5-hydroxy-2-oxo-3-furanyl)- decahydro-2,2,4a,8a-tetramethyl-,(2aR,4aR,- 4bR,5aS,8R,8aS,10aR,10bR,14aS)-
CAS No. 73904-93-5