1	P4D	(2r)-2-{[(S)-[(1r)-1-amino-2-(4-hydroxyphenyl)ethyl](hydroxy)phosphoryl]methyl}butanedioic acid	1.000
2	P5D	(2r)-2-{[(S)-[(1r)-1-amino-2-phenylethyl](hydroxy)phosphoryl]methyl}butanedioic acid	0.955