Synonyms: 1,5-Methano-11H-furo[3,2-g]pyrano[3,2-b]xanthene-3a(4H)-crotonaldehyde,1,2,5,7-tetrahydro-8-hydroxy-a,2,2,11,11-pentamethyl-13-(3-methyl-2-butenyl)-4,7-dioxo-, trans- (8CI);1,5-Methano-1H,3H,11H-furo[3,4-g]pyrano[3,2-b]xanthene-1-crotonaldehyde,3a,4,5,7-tetrahydro-8-hydroxy-a,3,3,11,11-pentamethyl-13-(3-methyl-2-butenyl)-7,15-dioxo- (7CI);2-Butenal,2-methyl-4-[(1R,3aS,5S,14aS)-3a,4,5,7-tetrahydro-8-hydroxy-3,3,11,11-tetramethyl-13-(3-methyl-2-butenyl)-7,15-dioxo-1,5-methano-1H,3H,11H-furo[3,4-g]pyrano[3,2-b]xanthen-1-yl]-,(2Z)- (9CI); 2-Butenal,2-methyl-4-[3a,4,5,7-tetrahydro-8-hydroxy-3,3,11,11-tetramethyl-13-(3-methyl-2-butenyl)-7,15-dioxo-1,5-methano-1H,3H,11H-furo[3,4-g]pyrano[3,2-b]xanthen-1-yl]-,[1R-[1a,1(Z),3ab,5a,14aS*]]-;1,5-Methano-1H,3H,11H-furo[3,4-g]pyrano[3,2-b]xanthene, 2-butenal deriv.;Morellin