The molecule is a macrolide consisting of a 14-membered bicyclic lactone attached to the rare 2-thiazolidinone moiety. It is obtained from the Red Sea sponge Latrunculia magnifica. It has a role as a metabolite, an actin polymerisation inhibitor and a toxin. It is a macrolide, a cyclic hemiketal, an oxabicycloalkane and a thiazolidinone.
(4R)-4-[(1R,4Z,8Z,10S,13R,15R)-15-hydroxy-5,10-dimethyl-3-oxo-2,14-dioxabicyclo[11.3.1]heptadeca-4,8-dien-15-yl]-1,3-thiazolidin-2-one