[{"from": "human", "value": "Could you provide a description of this molecule? [C][S][C][C][C][C][Branch1][=Branch1][C][=Branch1][C][=O][O-1][N]"}, {"from": "gpt", "value": "The molecule is the alpha-amino-acid anion that is the conjugate base of homomethionine obtained by deprotonation of the carboxy group. It is an alpha-amino-acid anion and a sulfur-containing amino-acid anion. It is a conjugate base of a homomethionine."}]