[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][C][C][C][C][Branch2][Ring1][C][C][Branch1][Ring2][C][C][O][S][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N][O]"}, {"from": "gpt", "value": "The molecule is an L-cysteine derivative in which the sulfur atom carries a 1,4-dihydroxynonan-3-yl substituent. It has been synthesised by reaction of (E)-4-hydroxynon-2-enal (HNE) with L-cysteine, the sulfur atom of cysteine reacting with the double bond function of HNE via formation of a Michael adduct."}]