[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is the dimethanesulfonate salt of almitrine. It has a role as a central nervous system stimulant. It contains an almitrine."}, {"from": "gpt", "value": "[C][S][=Branch1][C][=O][=Branch1][C][=O][O].[C][S][=Branch1][C][=O][=Branch1][C][=O][O].[C][=C][C][N][C][=N][C][=Branch2][Ring2][O][=N][C][=Branch1][Ring2][=N][Ring1][=Branch1][N][C][C][N][Branch1][Branch1][C][C][Ring1][=Branch1][C][Branch1][N][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][F][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][F][N][C][C][=C]"}]