4-O-Demethylbarbatic acid

2-Hydroxy-3,6-dimethyl-4-(2,4-dihydroxy-3,6-dimethylbenzoyloxy)benzoic acid

4-(2,4-Dihydroxy-3,6-dimethylbenzoyloxy)-2-hydroxy-3,6-dimethylbenzoic acid

2-Hydroxy-4-[(2,4-dihydroxy-3,6-dimethylbenzoyl)oxy]-3,6-dimethylbenzoic acid