2H-Naphtho(2,1-c)pyran-7-carboxylic acid, 2-(3-furanyl)dodecahydro-9-hydroxy-10b-methyl-4,6-dioxo-, methyl ester, (2S-(2alpha,4abeta,6aalpha,7beta,9beta,10abeta,10balpha))- 66835-37-8 Diosbulbin F