The molecule is a clavulone that is a chlorinated prostanoid isolated from marine corals. It is a clavulone, a methyl ester, an acetate ester and an alpha-chloroketone.
methyl (5S,6R,7R)-5,6,7-triacetyloxy-7-[(1R,2S)-2-acetyloxy-4-chloro-2-[(Z)-oct-2-enyl]-5-oxocyclopent-3-en-1-yl]heptanoate