1	OAS	O-acetylserine	1.000
2	0AH	O-(bromoacetyl)-L-serine	0.909
3	42Y	O-propanoyl-L-serine	0.909
4	TH5	O-acetyl-L-threonine	0.909
5	TIS	O-(1,1-dihydroxyethyl)-L-serine	0.909
6	1X6	O-[(2e)-3-aminoprop-2-enoyl]-L-serine	0.833
7	432	O-butanoyl-L-serine	0.833
8	AZS	O-diazoacetyl-L-serine	0.833
9	7BC	3-(acryloyloxy)propanoic acid	0.818
10	OLZ	O-(2-aminoethyl)-L-serine	0.818
11	7C9	O-methyl-L-serine	0.800
12	J8W	(2~{S})-2-azanyl-3-(3-oxidanyl-3-oxidanylidene-propanoyl)oxy-propanoic acid	0.769
13	K5L	(2~{R})-2-azanyl-3-(3-oxidanyl-3-oxidanylidene-propanoyl)oxy-propanoic acid	0.769
14	73C	(2~{S})-2-azanyl-3-butoxy-propanoic acid	0.750
15	SRZ	Propoxy-L-serine	0.750
16	JIM	(2r)-2,3-dihydroxypropyl acetate	0.727
17	OLT	O-methyl-L-threonine	0.727
18	4PA	Propyl acetate	0.700