Synonyms: Pyrano[3,2-c]xanthen-7(2H)-one,9-(1,1-dimethyl-2-propenyl)-3,4-dihydro-3,4,8,11-tetrahydroxy-2,2-dimethyl-,(3R,4S)-rel- (9CI); Pyrano[3,2-c]xanthen-7(2H)-one,9-(1,1-dimethyl-2-propenyl)-3,4-dihydro-3,4,8,11-tetrahydroxy-2,2-dimethyl-,trans-(?à)-; Garcigerrin B;Pyrano[3,2-c]xanthen-7(2H)-one,9-(1,1-dimethyl-2-propenyl)-3,4-dihydro-3,4,8,11-tetrahydroxy-2,2-dimethyl-,trans-