[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is an alpha-amino-acid anion. It is a conjugate base of a cysteinate(1-)."}, {"from": "gpt", "value": "[C][Branch1][#Branch2][C][Branch1][=Branch1][C][=Branch1][C][=O][O-1][N][S-1]"}]