[{"from": "human", "value": "Describe this molecule. [B][Branch1][C][F][Branch1][C][F][F].[O].[O]"}, {"from": "gpt", "value": "The molecule is a fuming liquid. It may be corrosive to skin, eyes and mucous membranes. This material may be toxic by inhalation. It is used as a catalyst in chemical reactions."}]