SMILES: C[C@]12CCC3=C([C@@H]1C(=O)C(=C2)Cl)C(=O)C=C4[C@@]3([C@@H]([C@H](C=C4)Cl)Cl)CCl
Description: The molecule is an androstanoid that is androsta-3,5,8,16-tetraene substituted by chloro groups at positions 1, 2, 16 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 a 15-oxo steroid, a 7-oxo steroid, an androstanoid and a chlorinated steroid.