The molecule is the conjugate base of methoxymycolic acid type-1 (VII). A class of mycolic acids characterized by the presence of a proximal trans-cyclopropyl group and a distal (CH-CH3)-(CHO-CH3) fragment of (S,S) stereochemistry in the meromycolic chain.
(2R,3R)-2-ethyl-3-hydroxy-4-[2-[(4S,5S)-4-methoxy-5-methylheptan-2-yl]cyclopropyl]butanoate