[{"from": "human", "value": "What can you tell me about this molecule? [C][=N][C][=C][Branch1][Branch2][C][=Branch1][C][=O][N][Ring1][#Branch1][N][=C][N][Ring1][Branch2][C@H1][C@@H1][Branch2][Ring1][=Branch2][C@@H1][Branch2][Ring1][Ring2][C@H1][Branch1][Ring2][O][Ring1][Branch1][C][S][C][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1][O][O]"}, {"from": "gpt", "value": "The molecule is zwitterionic form of S-inosyl-L-homocysteine 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 S-inosyl-L-homocysteine."}]