[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a L-cysteine thioether and a bromoamino acid. It is a tautomer of a S-(4-bromophenyl)-L-cysteine zwitterion."}, {"from": "gpt", "value": "[C][=C][C][=Branch1][P][=C][C][=C][Ring1][=Branch1][S][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N][Br]"}]