1	73C	(2~{S})-2-azanyl-3-butoxy-propanoic acid	1.000
2	432	O-butanoyl-L-serine	0.917
3	42Y	O-propanoyl-L-serine	0.833
4	SRZ	Propoxy-L-serine	0.833
5	1X6	O-[(2e)-3-aminoprop-2-enoyl]-L-serine	0.769
6	7BC	3-(acryloyloxy)propanoic acid	0.750
7	OAS	O-acetylserine	0.750
8	OLZ	O-(2-aminoethyl)-L-serine	0.750
9	7C9	O-methyl-L-serine	0.727
10	2JG	(2s)-2-amino-3-oxopropyl hexanoate	0.714
11	J8W	(2~{S})-2-azanyl-3-(3-oxidanyl-3-oxidanylidene-propanoyl)oxy-propanoic acid	0.714
12	K5L	(2~{R})-2-azanyl-3-(3-oxidanyl-3-oxidanylidene-propanoyl)oxy-propanoic acid	0.714