[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a crystalline solid. It is very flammable and may be toxic by ingestion."}, {"from": "gpt", "value": "[C][C@@H1][Branch2][Ring1][Branch1][C@@H1][C@H1][Branch1][Ring2][O][Ring1][Branch1][C@@H1][Branch1][Branch1][C][O][Ring1][=Branch1][O][N+1][=Branch1][C][=O][O-1][O]"}]