[{"from": "human", "value": "Generate a molecule based on this description. Crystals derived from methanol and acetone. "}, {"from": "gpt", "value": "[C][N+1][Branch1][C][C][Branch1][C][C][C][C][C][C][C][C][C][C][C][C][N+1][Branch1][C][C][Branch1][C][C][C].[Br-1].[Br-1]"}]