[{"from": "human", "value": "Please give me some details about this molecule. [O][=Os][=Branch1][C][=O][=Branch1][C][=O][=O]"}, {"from": "gpt", "value": "The molecule appears as a colorless or yellow solid with a pungent odor of chlorine. Begins to sublime below melting point. Soluble in alcohol. Toxic by inhalation and a strong irritant to the eyes and mucous membranes."}]