[{"from": "human", "value": "Describe this molecule. [C][Branch1][Ring1][C][O][N][Branch1][Ring2][C][C][O][C][C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is a bicine that is a Good's buffer substance, pKa = 8.35 at 20 \u2103. It is a conjugate acid of a [bis(2-hydroxyethyl)amino]acetate. It is a tautomer of a [bis(2-hydroxyethyl)ammonio]acetate."}]