[{"from": "human", "value": "Please give me some details about this molecule. [C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C@@H1][Branch2][Ring1][Branch1][C][C@@H1][Branch1][S][C][C][C][C][C@@H1][Branch1][C][C][C@H1][Branch1][Ring1][C][C][O][C][O][O]"}, {"from": "gpt", "value": "The molecule is a lipid-based glycol consisting of (3S,4R)-3-methoxy-4-methylnonacosane having (9R)- and (11S)-hydroxy substituents; a characteristic constituent of the waxes of tubercule bacilli. It has a role as an epitope. It is a glycol and a member of phthiocerol derivatives."}]