Collatollic acid

α-Collatolic acid

α,β-Collatolic acid

8-Hydroxy-3-methoxy-11-oxo-1,6-bis(2-oxoheptyl)-11H-dibenzo[b,e][1,4]dioxepin-7-carboxylic acid

1,6-Bis(2-oxoheptyl)-3-methoxy-8-hydroxy-11-oxo-11H-dibenzo[b,e][1,4]dioxepin-7-carboxylic acid