149655-53-8 1,5-Methano-1H,7H,11H-furo[3,4-g]pyrano[3,2-b]xanthene-7,15-dione,3,3a,4,5-tetrahydro-8-hydroxy-1-(4-hydroxy-3-methyl-2-butenyl)-3,3,11,11-tetramethyl-13-(3-methyl-2-butenyl)-,[1R-[1a,1(E),3ab,5a,14aS*]]- 38746-53-1 7H-FURO(3',2':4,5)FURO[2,3-C]XANTHEN-7-ONE,2-(ACETYLOXY)-2,3,3A,12C-TETRAHYDRO-8-HYDROXY-6-METHOXY-,(2A,3AA,12CA)-