[{"from": "human", "value": "Describe this molecule. [C][C][Branch1][C][C][C][Branch1][=Branch1][C][=Branch1][C][=O][O-1][N]"}, {"from": "gpt", "value": "The molecule is an alpha-amino-acid anion and a branched-chain amino-acid anion. It is a conjugate base of a valine."}]