[{"from": "human", "value": "Describe this molecule. [C][=C][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][C][=Branch1][Branch1][=C][N][Ring1][=Branch1][C][C][=Branch1][C][=O][N][C][C][C][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1]"}, {"from": "gpt", "value": "The molecule is zwitterionic form of N(6)-[(indol-3-yl)acetyl]-L-lysine arising from transfer of a proton from the carboxy to the amino group; major species at pH 7.3. It is a tautomer of a N(6)-[(indol-3-yl)acetyl]-L-lysine."}]