[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is a primary aliphatic amine that is butan-2-amine substituted by a methyl group at position 2. Metabolite observed in cancer metabolism. It has a role as a human metabolite."}, {"from": "gpt", "value": "[C][C][C][Branch1][C][C][Branch1][C][C][N]"}]