[{"from": "human", "value": "Could you give me a brief overview of this molecule? [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]"}, {"from": "gpt", "value": "The molecule is a Calcium Channel Blocker. The mechanism of action of diltiazem is as a Calcium Channel Antagonist."}]