[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a calcium channel blocker."}, {"from": "gpt", "value": "[C][C][C][O][C][C][O][C][=Branch1][C][=O][C][=C][Branch2][Ring2][Branch2][N][C][=Branch2][Ring2][C][=C][Branch2][Ring1][Ring1][C][Ring1][=Branch1][C][=C][C][=Branch1][=Branch1][=C][C][=C][Ring1][=Branch1][N+1][=Branch1][C][=O][O-1][C][=Branch1][C][=O][O][C][C][O][C][C][C][C][C]"}]