[{"from": "human", "value": "Could you give me a brief overview of this molecule? [F][S][Branch1][C][F][Branch1][C][F][Branch1][C][F][Branch1][C][F][F]"}, {"from": "gpt", "value": "The molecule is a Contrast Agent for Ultrasound Imaging. The mechanism of action of sulfur hexafluoride is as an Ultrasound Contrast Activity."}]