The molecule is a galactosylceramide sulfate(1-) in which the ceramide N-acyl group is specified as (R)-2-hydroxystearoyl. It is a conjugate base of a 1-(3-O-sulfo-beta-D-galactosyl)-N-[(2R)-2-hydroxystearoyl]sphingosine.
[(2R,3R,4S,5S,6R)-3,5-dihydroxy-2-[(E,2S,3R)-3-hydroxy-2-[[(2R)-2-hydroxyoctadecanoyl]amino]octadec-4-enoxy]-6-(hydroxymethyl)oxan-4-yl] sulfate