IUPAC:4,4',5,6,6',7,8-heptahydroxy-2,2'-dimethoxy-7,7'-dimethyl-6,7,8,9-tetrahydro-5H,9'H,10H,10'H-[1,1'-bianthracene]-9,9',10,10'-tetrone
IUPAC:4,4',5,6,6',7,8-heptahydroxy-2,2'-dimethoxy-7,7'-dimethyl-6,7,8,9-tetrahydro-5H,9'H,10H,10'H-[1,1'-bianthracene]-9,9',10,10'-tetrone