[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a toxic gas that is somewhat similar to silicon tetrafluoride and is expected to behave in a similar fashion. See the chemical datasheet for silicon tetrafluoride for more information."}, {"from": "gpt", "value": "[F][Ge][Branch1][C][F][Branch1][C][F][F]"}]