( )-Isoxanthochymol 52617-33-1 9H-4a,8-Methano-2H-cycloocta(b)pyran-9,11-dione, 10-(3,4-dihydroxybenzoyl)-3,4,5,6,7,8-hexahydro-2,2,7,7-tetramethyl-3,6,8-tris(3-methyl-2-butenyl)-, (3R,4aR,6R,8S)- 9H-4a,8-Methano-2H-cycloocta(b)pyran-9,11-dione, 10-(3,4-dihydroxybenzoyl)-3,4,5,6,7,8-hexahydro-2,2,7,7-tetramethyl-3,6,8-tris(3-methyl-2-butenyl)-, (3R-(3alpha,4abeta,6alpha,8beta))- Isoxanthochymol