1	PSK	[(3r,4s)-4-hydroxy-3-methyl-2-oxohexyl]phosphonic acid	1.000
2	PSX	[(2s,3r,4s)-2,4-dihydroxy-3-methylhexyl]phosphonic acid	0.923
3	HPO	2-oxoheptylphosphonic acid	0.714
4	YML	[(3r,4s,5s,7r)-4,8-dihydroxy-3,5,7-trimethyl-2-oxooctyl]phosphonic acid	0.706