[{"from": "human", "value": "Could you provide a description of this molecule? [C][C][#C][C@@][Branch2][Branch1][C][C][C][C@@H1][C@@][Ring1][Branch1][Branch2][Ring2][Branch2][C][C@@H1][Branch2][Ring1][Ring2][C][=C][C][C][C][=Branch1][C][=O][C][=C][Ring1][#Branch1][C][C][C@@H1][Ring1][#C][Ring1][O][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][N][Branch1][C][C][C][C][O]"}, {"from": "gpt", "value": "The molecule is a derivative of the synthetic progestin norethindrone with antiprogesterone activity. Mifepristone competitively binds to the progesterone receptor, resulting in inhibition of the effects of endogenous or exogenous progesterone. This agent also exhibits antiglucocorticoid and weak antiandrogenic activities."}]