The molecule is a scalarane sesterterpenoid that is 12-O-deacetyl-12-epi-19-deoxy-scalarin substituted by an additional hydroxy group at position 21. It has been isolated from the sponge, Hyattella species. It has a role as an animal metabolite. It is a gamma-lactone, an organic heteropentacyclic compound and a scalarane sesterterpenoid. It derives from a 12-epi-scalarin.
(5aS,5bR,7aR,8R,11aR,11bR,13R,13aS,13bR)-13-hydroxy-8-(hydroxymethyl)-5b,8,11a,13a-tetramethyl-5,5a,6,7,7a,9,10,11,11b,12,13,13b-dodecahydro-1H-phenanthro[2,1-e][2]benzofuran-3-one