The molecule is a mycolic acid produced inter alia by Mycobacterium tuberculosis, the structure of which is heptacosanoic acid substituted at the alpha-carbon by a (14E)-33-hydroxy-1-[(icosan-2-yl)oxy]-1-oxotritriacont-14-en-33-yl chain.
(E)-3-hydroxy-35-icosan-2-yloxy-35-oxo-2-pentacosylpentatriacont-21-enoic acid