The molecule is a glycosylsphingoid in which a beta-D-galactosyl residue is attached to the primary hydroxyl group of sphinganine. It is a conjugate base of a beta-D-galactosyl-(1<->1')-sphinganine(1+).
(2R,3R,4S,5R,6R)-2-[(2S,3R)-2-amino-3-hydroxyoctadecoxy]-6-(hydroxymethyl)oxane-3,4,5-triol