[{"from": "human", "value": "Provide a description of this molecule. [C][C][C@H1][Branch1][C][C][C@H1][Branch2][Ring1][Ring1][C][/C][=C][\\C][C@H1][Branch1][O][C@@H1][Branch1][Ring1][C][C][C][=Branch1][C][=O][O-1][O][O][C]"}, {"from": "gpt", "value": "The molecule is the conjugate base of methoxymycolic acid type-3 (IX). A class of mycolic acids characterized by the presence of a proximal cis C=C double bond and a distal (CH-CH3)-(CHO-CH3) fragment of (S,S) stereochemistry in the meromycolic chain."}]