1,1',8,8'-tetrahydroxy-3,3'-dimethoxy-6,6'-dimethyl-2'-(3-methyl-2-butenyl)-(4,4'-bianthracene)-9,9',10,10'-tetratrone
1,1',8,8'-tetrahydroxy-3,3'-dimethoxy-6,6'-dimethyl-2'-(3-methyl-2-butenyl)-(4,4'-bianthracene)-9,9',10,10'-tetratrone