[{"from": "human", "value": "Could you provide a description of this molecule? [C][C][Branch1][C][C][C][O][C][C][Branch2][Ring1][=Branch1][C][N][Branch1][#Branch2][C][C][=C][C][=C][C][=C][Ring1][=Branch1][C][=C][C][=C][C][=C][Ring1][=Branch1][N][C][C][C][C][Ring1][Branch1]"}, {"from": "gpt", "value": "The molecule has antihypertensive and selective anti-arrhythmia activities and acts as a calmodulin antagonist. It is no longer marketed in the United States, as it has been implicated in causing ventricular arrhythmias (ie. Torsade de pointes)."}]