Arthonia acid

Arthonioic acid

2-Methoxy-4-[2-(2-oxoheptyl)-4,6-dihydroxybenzoyloxy]-6-(2-oxoheptyl)benzoic acid

2,4-Dihydroxy-6-(2-oxoheptyl)benzoic acid 4-carboxy-3-methoxy-5-(2-oxoheptyl)phenyl ester