The molecule is an ammonium ion that is obtained by protonation of the amino group of D-glucosylsphingosine. Major species at pH 7.3. It is a conjugate acid of a D-glucosylsphingosine.
[(E,2S,3R)-3-hydroxy-1-[(3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoctadec-4-en-2-yl]azanium