66756-57-8 7,10-Methano-2H-pyrano(4,3-g)(3)benzoxepin-4,6,8(1H)-trione, 2-(3-furanyl)octahydro-11b-methyl-, (2S-(2alpha,4abeta,6aalpha,7alpha,10alpha,11abeta,11bbeta))- Diosbulbin D