[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule appears as white powder. Small colorless needles; toxic."}, {"from": "gpt", "value": "[C][=C][C][=Branch1][S][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][S][=Branch1][C][=O][=Branch1][C][=O][O][N]"}]