[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is a long-chain alkane that is tridecane substituted by a methyl group at position 2. Metabolite observed in cancer metabolism. It has a role as a human metabolite. It derives from a hydride of a tridecane."}, {"from": "gpt", "value": "[C][C][C][C][C][C][C][C][C][C][C][C][Branch1][C][C][C]"}]