[{"from": "human", "value": "What can you tell me about this molecule? [C][C][C@H1][Branch1][C][C][C][=Branch1][C][=O][C][C][C][C][Ring1][Ring1][C][C@H1][Branch1][O][C@@H1][Branch1][Ring1][C][C][C][=Branch1][C][=O][O-1][O]"}, {"from": "gpt", "value": "The molecule is the conjugate base of ketomycolic acid type-1 (X). A class of mycolic acids characterized by the presence of a proximal cis-cyclopropyl group followed by a distal oxo group and a (CH-CH3) fragment of (S) stereochemistry in the meromycolic chain."}]