1	SPU	2-{[(R)-{[(2s,3r,4e)-2-amino-3-hydroxyoctadec-4-en-1-yl]oxy}(hydroxy)phosphoryl]oxy}-N,N,N-trimethylethanaminium	1.000
2	S1P	(2s,3r,4e)-2-amino-3-hydroxyoctadec-4-en-1-yl dihydrogen phosphate	0.750
3	DPV	Dodecyl 2-(trimethylammonio)ethyl phosphate	0.742