[{"from": "human", "value": "Describe this molecule. [C][C][=C][C][=Branch2][Branch1][C][=C][Branch1][N][C][=Branch1][Ring2][=C][Ring1][=Branch1][C][=Branch1][C][=O][C][N][C][=Branch1][C][=O][C][=C][Branch1][=Branch1][C][=C][S][Ring1][Branch1][S][=Branch1][C][=O][=Branch1][C][=O][N][C][=C][Branch1][=Branch2][C][=Branch1][Branch1][=N][O][Ring1][Branch1][C][C][C]"}, {"from": "gpt", "value": "The molecule is a next-generation endothelin antagonist that is being studied through oral and intravenous formulations by Encysive Pharmaceuticals."}]