The molecule is an N-acyl-1-O-beta-D-glucosyl-4-hydroxy-15-methylhexadecasphinganine in which the acyl group has 21 carbons and 0 double bonds. It derives from a 15-methylhexadecaphytosphingosine.
N-[(2S,3S,4R)-3,4-dihydroxy-15-methyl-1-[(2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyhexadecan-2-yl]henicosanamide