[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule is an inorganic compound that is used as an antacid in the treatment of peptic ulcers."}, {"from": "gpt", "value": "[O-1][Si][=Branch1][C][=O][O][Si][Branch1][C][O-1][Branch1][C][O-1][O][Si][=Branch1][C][=O][O-1].[Mg+2].[Mg+2]"}]