[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule appears as white powder or crystals with a sharp saline taste. Shipped as a solid or an aqueous solution. Strongly irritates skin, eyes and mucous membranes. Toxic by ingestion. Used in insecticides, solder flux and etching glass."}, {"from": "gpt", "value": "[F-1].[K+1]"}]