[{"from": "human", "value": "Provide a description of this molecule. [C][C@][C][C][C@H1][C@H1][Branch2][Ring1][Branch1][C@@H1][Ring1][=Branch1][C][C][C@@H1][Ring1][=Branch2][O][C][Branch1][#Branch1][C][C][C][C][Ring1][Branch1][O][C][C][C][C@@H1][C@@][Ring2][Ring1][C][Branch1][N][C][C@@H1][C@H1][Branch1][Ring2][C][Ring1][=Branch1][S][Ring1][Ring2][C]"}, {"from": "gpt", "value": "The molecule is an anabolic ether-modified form of the steroid epitiostanol. It has anti-estrogenic effect, which inhibits the progression of estrogen-stimulated cancers by competitive inhibition of estrogen binding to estrogen receptors. (NCI)"}]