33570-04-6 4H,5aH,9H-Furo(2,3-b)furo(3',2':2,3)cyclopenta(1,2-c)furan-2,4,7(3H,8H)-trione, 9-(1,1-dimethylethyl)-10,10a-dihydro-8,9-dihydroxy-, (5aR-(3aS*,5aalpha,8beta,8aS*,9alpha,10aalpha))- Bilobalide