[{"from": "human", "value": "Please give me some details about this molecule. [C][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][S][C][Branch1][=Branch2][C][Branch1][C][F][Branch1][C][F][F][Branch1][C][F][F][Branch1][C][F][F]"}, {"from": "gpt", "value": "The molecule is a Contrast Agent for Ultrasound Imaging. The mechanism of action of perflexane is as an Ultrasound Contrast Activity."}]