Synonyms: | 10H-dipyrano[2,3-i:3',2'-a]xanthen-14(3H)-one, 5,13-dihydroxy-3,3,10,10-tetramethyl-;10H-dipyrano[3,2-a:2',3'-i]xanthen-14(3H)-one, 5,13-dihydroxy-3,3,10,10-tetramethyl-;5,13-dihydroxy-3,3,10,10-tetramethyl-10H-dipyrano[2,3-i:3',2'-a]xanthen-14(3H)-one;5,13-Dihydroxy-3,3,10,10-tetramethyl-10H-dipyrano[3,2-a:2',3'-i]xanthen-14(3H)-one;5,13-Dihydroxy-3,3,10,10-tetramethyl-3H,10H-4,7,9-trioxa-benzo[a]naphthacen-14-one |