[{"from": "human", "value": "Create a molecule that satisfies the conditions outlined in the description. The molecule appears as odorless white crystals. Becomes anhydrous at 212 \u00b0F. Aqueous solution is alkaline to litmus. "}, {"from": "gpt", "value": "[O].[O].[O].[O].[O].[O].[O].[O][As][=Branch1][C][=O][Branch1][C][O-1][O-1].[Na+1].[Na+1]"}]