[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule appears as a crystalline solid, or a solid dissolved in a liquid. Denser than water. Contact may slightly irritate skin, eyes and mucous membranes. May be slightly toxic by ingestion. Used to make other chemicals."}, {"from": "gpt", "value": "[NH4+1].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Na+1].[Na+1].[Na+1].[V].[V].[V].[V].[V].[V].[V].[V]"}]