(2S)-4-[(2S,3R,4R,5R,6R)-3,4,5-Trihydroxy-6-(hydroxymethyl)(2H-3,4,5,6-tetrahydropyran-2-yl)]-2-amino-N-tetradecylbutanamide .beta.-D-Galactopyranoside, 2-amino-3-hydroxy-4-octadecnyl, [R-[R*,S*-(E)]] 2238-90-6 AIDS-110308 AIDS110308 Psychosine