[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][C][=C][N][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][S][=Branch1][C][=O][=Branch1][C][=O][N][C][=C][Branch2][Ring1][Branch1][C][=Branch1][S][=N][C][=Branch1][Ring2][=N][Ring1][=Branch1][C][=C][C][=N][C][=C][Ring1][=Branch1][O][C][O][C][=C][C][=C][C][=C][Ring1][=Branch1][O][C]"}, {"from": "gpt", "value": "The molecule is a potent and highly selective ET[A] receptor blocker and is clinically investigated in diabetic nephropathy. This study was designed to evaluate whether avosentan influences the pharmacokinetics of steroid oral contraceptives."}]