[{"from": "human", "value": "Describe this molecule. [B][Branch1][=C][C][C][S][C][C@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N][Branch1][C][O][O]"}, {"from": "gpt", "value": "The molecule is a member of boronic acids and a L-cysteine derivative."}]