[{"from": "human", "value": "Provide a description of this molecule. [O][=V][=Branch1][C][=O][O][V][=Branch1][C][=O][=O]"}, {"from": "gpt", "value": "The molecule appears as a yellow to red crystalline powder. Slightly soluble in water and denser than water. Contact may cause severe irritation to skin, eyes, and mucous membranes. May be toxic by ingestion, inhalation and skin absorption."}]