[{"from": "human", "value": "What can you tell me about this molecule? [C][=C][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][C][=Branch1][Branch1][=C][N][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-[(E)-N-hydroxy-2-(indol-3-yl)ethanimidoyl]-L-cysteinylglycine; major species at pH 7.3. It is a tautomer of a S-[(E)-N-hydroxy-2-(indol-3-yl)ethanimidoyl]-L-cysteinylglycine."}]