[{"from": "human", "value": "What can you tell me about this molecule? [C][C][C@H1][Branch1][S][C][=C][C@H1][Ring1][=Branch1][C][C][=Branch1][C][=O][C][=Branch1][C][=O][O-1][O]"}, {"from": "gpt", "value": "The molecule is a tetrahydro-4-hydroxyphenylpyruvate obtained by deprotonation of the carboxy group of 3-[(1R,4R)-4-hydroxycyclohex-2-en-1-yl]pyruvic acid; major species at pH 7.3. It is a conjugate base of a 3-[(1R,4R)-4-hydroxycyclohex-2-en-1-yl]pyruvic acid."}]