The molecule is the conjugate base of alpha-mycolic acid type-3 (V). A class of mycolic acids characterized by the presence of a proximal cis C=C double bond and a distal cis-cyclopropyl group in the meromycolic chain.
(Z,2R,3R)-2-ethyl-7-(2-ethylcyclopropyl)-3-hydroxyhept-5-enoate