[{"from": "human", "value": "Provide a brief overview of this molecule. [C][Branch2][Ring1][Branch1][C@H1][Branch1][P][C@@H1][C][=Branch1][N][=C][Branch1][Branch2][C][=Branch1][C][=O][O][Ring1][=Branch1][O][O-1][O][O].[Na+1]"}, {"from": "gpt", "value": "Almost odorless fluffy, white to off-white crystalline powder. Used as an antioxidant and preservative."}]