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- cyclopropyl group followed by a cis C=C double bond and a distal (CH-CH3)-(CHO-CH3) fragment of (S,S) stereochemistry in the meromycolic chain.
(2R,3R)-2-ethyl-3-hydroxy-4-[2-[(Z,5S,6S)-5-methoxy-6-methyloct-2-enyl]cyclopropyl]butanoate