[{"from": "human", "value": "Describe this molecule. [C][C][Branch1][#Branch2][C][C][Branch1][C][C][Branch1][C][C][C][C][C][Branch1][C][C][Branch1][C][C][C][C][Branch1][C][C][Branch1][C][C][C]"}, {"from": "gpt", "value": "The molecule is a branched alkane that is nonane carrying seven methyl substituents at positions 2, 2, 4, 4, 6, 8 and 8."}]