[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a Calcium Channel Blocker. The mechanism of action of diltiazem is as a Calcium Channel Antagonist."}, {"from": "gpt", "value": "[C][C][=Branch1][C][=O][O][C@@H1][C@@H1][Branch2][Ring1][Branch2][S][C][=C][C][=C][C][=C][Ring1][=Branch1][N][Branch1][Branch1][C][Ring1][O][=O][C][C][N][Branch1][C][C][C][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][O][C]"}]