1	1QX	Dodecyl hydrogen (S)-(3-azidopropyl)phosphonate	1.000
2	1QY	Tetradecyl hydrogen (R)-(3-azidopropyl)phosphonate	0.917
3	1R1	Hexadecyl hydrogen (R)-(3-azidopropyl)phosphonate	0.846
4	4S7	1-{3-[(R)-hydroxy(octadecyloxy)phosphoryl]propyl}triaza-1,2-dien-2-ium	0.786