5,5',7-trichloro-6-hydroxy-4'-methoxy-4,6'-dimethylspiro-2',3(2H)-dione

(3-Chloro-2,6-dihydroxy-4-methoxy-phenyl)-(3,5-dichloro-2,4-dihydroxy-6-methyl-phenyl)-methanone

(3-Chloro-6-hydroxy-2,4-dimethoxy-phenyl)-(3,5-dichloro-2,4-dihydroxy-6-methyl-phenyl)-methanone