1 1PZ (2s,3r,4e)-2-(dodecanoylamino)-3-hydroxyoctadec-4-en-1-yl dihydrogen phosphate 1.000 2 1T9 (2s,3r,4e)-3-hydroxy-2-(octanoylamino)octadec-4-en-1-yl dihydrogen phosphate 0.895 3 SPL Octanoic acid (2-hydroxy-1-hydroxymethyl-heptadec-3-enyl)-amide 0.744 4 1PW (2s,3r,4e)-2-(acetylamino)-3-hydroxyoctadec-4-en-1-yl dihydrogen phosphate 0.737