[{"from": "human", "value": "What can you tell me about this molecule? [C][Si][Branch1][C][C][Branch1][C][C][C]"}, {"from": "gpt", "value": "The molecule appears as a colorless, mildly acidic volatile liquid. A serious fire hazard. Mildly toxic by ingestion. Emits acrid smoke and fumes when heated to high temperatures. Less dense than water and insoluble in water, but soluble in most organic solvents. Used as an aviation fuel and as an internal standard for nmr analytical instruments."}]