[{"from": "human", "value": "Generate a molecule based on this description. The molecule is a solid. Insoluble in water. Used in organic synthesis, calibration, and temperature sensing equipment."}, {"from": "gpt", "value": "[C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C]"}]