The molecule is the conjugate base of methoxymycolic acid type-2 (VIII). A class of mycolic acids characterized by the presence of a proximal alkenyl group with a trans C=C double bond and a distal (CH-CH3)-(CHO-CH3) fragment of (S,S) stereochemistry in the meromycolic chain.
(E,2R,3R,9S,10S)-2-ethyl-3-hydroxy-9-methoxy-5,10-dimethyldodec-6-enoate