[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule appears as white or transparent, glassy amorphous lumps or crystalline powder. Slightly soluble in water, but dissolves very slowly; more soluble in hot water. Noncombustible. Corrosive to metals in the presence of moisture. Toxic by ingestion."}, {"from": "gpt", "value": "[O-2].[O-2].[O-2].[As+3].[As+3]"}]