[{"from": "human", "value": "What can you tell me about this molecule? [C][Branch1][=C][C][N][C][Branch1][Ring1][C][O][Branch1][Ring1][C][O][C][O][C][N][C][Branch1][Ring1][C][O][Branch1][Ring1][C][O][C][O]"}, {"from": "gpt", "value": "The molecule is a water-soluble buffer substance used for the preparation of the biochemical and biological buffer solutions; pKa = 6.8 at 20 \u2103. It has a role as a buffer. It is functionally related to a member of tris."}]