1,7,8-Trihydroxy-2,2-dimethylpyrano[5',6':3,4]xanthone 3H,7H-pyrano[2,3-c]xanthen-7-one, 6,8,9-trihydroxy-3,3-dimethyl- 6,8,9-Trihydroxy-3,3-dimethyl-3H-4,12-dioxa-benzo[a]anthracen-7-one 6,8,9-trihydroxy-3,3-dimethyl-3H,7H-pyrano[2,3-c]xanthen-7-one Globulixanthone C InChI=1/C18H14O6/c1-18(2)6-5-8-12(24-18)7-10(20)13-16(22)14-11(23-17(8)13)4-3-9(19)15(14)21/h3-7,19-21H,1-2H