[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule is an alkane that is octane substituted by methyl groups at positions 3 and 5. Metabolite observed in cancer metabolism. It has a role as a human metabolite. It derives from a hydride of an octane."}, {"from": "gpt", "value": "[C][C][C][C][Branch1][C][C][C][C][Branch1][C][C][C][C]"}]