[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is an organic calcium salt. It contains an acamprosate(1-)."}, {"from": "gpt", "value": "[C][C][=Branch1][C][=O][N][C][C][C][S][=Branch1][C][=O][=Branch1][C][=O][O-1].[C][C][=Branch1][C][=O][N][C][C][C][S][=Branch1][C][=O][=Branch1][C][=O][O-1].[Ca+2]"}]