[{"from": "human", "value": "Describe this molecule. [C][Branch2][Ring1][#C][C][Branch2][Ring1][#Branch1][C][Branch1][S][C][Branch1][=Branch2][C][Branch1][C][F][Branch1][C][F][Br][Branch1][C][F][F][Branch1][C][F][F][Branch1][C][F][F][Branch2][Ring1][#Branch1][C][Branch1][S][C][Branch1][=Branch2][C][Branch1][C][F][Branch1][C][F][F][Branch1][C][F][F][Branch1][C][F][F][Branch1][C][F][F]"}, {"from": "gpt", "value": "The molecule is a haloalkane that is perfluorooctane in which a fluorine attached to one of the terminal carbons has been replaced by a bromine. It has a role as a radioopaque medium and a blood substitute. It is a perfluorinated compound, an organobromine compound and a haloalkane. It derives from a hydride of an octane."}]