[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][C][C][C][C][C][Branch1][C][C][C][C][C][Branch1][C][C][C]"}, {"from": "gpt", "value": "The molecule is a branched alkane that is undecane substituted at positions 2 and 5 by methyl groups."}]