[{"from": "human", "value": "Generate a molecule based on this description. 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)."}, {"from": "gpt", "value": "[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]"}]