[{"from": "human", "value": "Please give me some details about this molecule. [C][C][=Branch1][=C][=C][C][S][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1][C]"}, {"from": "gpt", "value": "The molecule is an L-alpha-amino acid zwitterion obtained by transfer of a proton from the carboxy to the amino group of S-prenyl-L-cysteine; major species at pH 7.3. It is a L-alpha-amino acid zwitterion and a S-polyprenyl-L-cysteine zwitterion. It is a tautomer of a S-prenyl-L-cysteine."}]