[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule appears as a colorless to yellow aqueous solution with an odor of sulfur dioxide. Corrosive to metals."}, {"from": "gpt", "value": "[O][S][=Branch1][C][=O][O-1].[O][S][=Branch1][C][=O][O-1].[Ca+2]"}]