[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][C@][C][C][C][=C][Branch1][N][C@@H1][Ring1][=Branch1][C][=Branch1][C][=O][C][=C][Ring1][#Branch2][C][=Branch1][C][=O][C][=C][C@@][Ring1][N][Branch1][=N][C@@H1][Branch1][=Branch2][C@H1][Branch1][Branch1][C][=C][Ring1][=Branch1][Cl][Cl][C][Cl]"}, {"from": "gpt", "value": "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."}]