IUPAC:1-[(8R,8aR,12aS)-1,3,6,7-tetrahydroxy-9,9,11-trimethyl-13-oxo-8H,8aH,9H,10H,12aH,13H-indeno[1,2-a]xanthen-8-yl]-3,4,6,8-tetrahydroxy-9H-xanthen-9-one
IUPAC:1-[(8R,8aR,12aS)-1,3,6,7-tetrahydroxy-9,9,11-trimethyl-13-oxo-8H,8aH,9H,10H,12aH,13H-indeno[1,2-a]xanthen-8-yl]-3,4,6,8-tetrahydroxy-9H-xanthen-9-one