[{"from": "human", "value": "Use the given information to create a molecule that fulfills the desired purpose. The molecule is the magnesium salt of acetic acid. It is functionally related to an acetic acid."}, {"from": "gpt", "value": "[C][C][=Branch1][C][=O][O-1].[C][C][=Branch1][C][=O][O-1].[Mg+2]"}]