The molecule is a mycolic acid produced by Mycobacterium tuberculosis. Its structure is that of tetracosanoic acid substituted at position 2 by a 1-hydroxy-18-[2-(18-methyl-17-oxohexatriacontyl)cyclopropyl]octadecyl group. It has a role as an epitope. It is a conjugate acid of a keto mycolate.
2-[1-hydroxy-18-[2-(18-methyl-17-oxohexatriacontyl)cyclopropyl]octadecyl]tetracosanoic acid