[{"from": "human", "value": "What can you tell me about this molecule? [C][C@@H1][Branch2][Ring1][#Branch1][C@H1][Branch1][=Branch2][P][=Branch1][C][=O][Branch1][C][O][O][S][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N][O]"}, {"from": "gpt", "value": "The molecule is an L-cysteine thioether in which the thiol hydrogen is replaced by a (1R,2S)-2-hydroxy-1-phosphonopropyl group It is a L-cysteine thioether, a member of phosphonic acids and a secondary alcohol. It is a conjugate acid of a (1R,2S)-1-(S-L-cysteinyl)-2-hydroxypropylphosphonate(2-)."}]