The molecule is a phosphatidylinositol mannoside having the phosphatidyl moiety (with specific O-acyl groups) at the 1-position, a single mannosyl residue at the 2-position and a linear pentamannoside at position 6 of the inositol ring. It has a role as an antigen.
[1-[[(1R,2R,3S,4R,5R,6R)-2-[(2R,3S,4S,5S,6R)-6-[[(2S,3S,4S,5S,6R)-6-[[(2S,3S,4S,5S,6R)-3-[(2R,3S,4S,5S,6R)-4,5-dihydroxy-6-(hydroxymethyl)-3-[(2R,3S,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]oxy-4,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxymethyl]-3,4,5-trihydroxyoxan-2-yl]oxymethyl]-3,4,5-trihydroxyoxan-2-yl]oxy-3,4,5-trihydroxy-6-[(2R,3S,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxycyclohexyl]oxy-hydroxyphosphoryl]oxy-3-hexadecanoyloxypropan-2-yl] 9-methylnonadecanoate