[{"from": "human", "value": "Describe this molecule. [C][As][=Branch1][C][=O][Branch1][C][O][O-1].[Na+1]"}, {"from": "gpt", "value": "The molecule appears as odorless colorless solid. Solution may be red or green. Solid may float or sink in water; solid and solution mix with water. (USCG, 1999)"}]