[{"from": "human", "value": "Provide a description of this molecule. [C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][C][/C][=Branch1][Ring1][=N][/O][/S][C][C@@H1][Branch1][N][C][=Branch1][C][=O][N][C][C][=Branch1][C][=O][O-1][NH3+1]"}, {"from": "gpt", "value": "The molecule is a dipeptide zwitterion resulting from transfer of a proton from the carboxy to the amino group of S-[(Z)-N-hydroxy-2-phenylethanimidoyl]-L-cysteinylglycine; major species at pH 7.3. It is a tautomer of a S-[(Z)-N-hydroxy-2-phenylethanimidoyl]-L-cysteinylglycine."}]