[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule appears as a white crystalline or powder solid with a slight sulfur odor. Toxic by inhalation. Strongly irritates skin and tissue. Noncombustible, but may decompose to emit toxic oxide fumes of sulfur and sodium when heated to high temperature. A corrosive acid when mixed with water. Used as a food preservative and as a laboratory reagent."}, {"from": "gpt", "value": "[O-1][S][=Branch1][C][=O][S][=Branch1][C][=O][=Branch1][C][=O][O-1].[Na+1].[Na+1]"}]