The molecule is an androstanoid that is androsta-3,5,8,16-tetraene substituted by chloro groups at positions 1, 12 and 19 and oxo groups at positions 7 and 15 (the 1beta,2alpha stereoisomer). It is isolated from burrowing sponge Cliona nigricans and exhibits cytotoxic efficacy. It has a role as a metabolite and an antineoplastic agent. It is an androstanoid, a 7-oxo steroid, a 15-oxo steroid and a chlorinated steroid.
(1S,2S,10S,13R,14R)-1,2-dichloro-10-(chloromethyl)-13-methyl-2,11,12,14-tetrahydro-1H-cyclopenta[a]phenanthrene-7,15-dione