[{"from": "human", "value": "Provide a description of this molecule. [C][C][C][Branch1][C][C][C][Branch1][=Branch1][C][=Branch1][C][=O][O][N]"}, {"from": "gpt", "value": "The molecule is a branched chain amino acid that consists of 3-methylpentanoic acid bearing an amino substituent at position 2. It is an alpha-amino acid and a branched-chain amino acid."}]