1	3ET	O-[(2r)-2-amino-3-(D-seryloxy)propanoyl]-N-[(2,3-dihydroxyphenyl)carbonyl]-L-serine	1.000
2	TD1	O-[(2s)-2-amino-3-hydroxypropanoyl]-N-(2,3-dihydroxybenzoyl)-L-serine	0.733
3	MCK	N-[(2,3-dihydroxyphenyl)carbonyl]-O-[(2s)-2-{[(2,3-dihydroxyphenyl)carbonyl]amino}-3-(L-seryloxy)propanoyl]-L-serine	0.700