[{"from": "human", "value": "Describe this molecule. [F][Se][Branch1][C][F][Branch1][C][F][Branch1][C][F][Branch1][C][F][F]"}, {"from": "gpt", "value": "The molecule is a corrosive, colorless gas at room temperature. Selenium hexafluoride is only slightly soluble in water. It does not occur naturally in the environment. Selenium hexafluoride is used as a gaseous electrical insulator."}]