1	7BC	3-(acryloyloxy)propanoic acid	1.000
2	42Y	O-propanoyl-L-serine	0.909
3	1X6	O-[(2e)-3-aminoprop-2-enoyl]-L-serine	0.833
4	432	O-butanoyl-L-serine	0.833
5	OAS	O-acetylserine	0.818
6	J8W	(2~{S})-2-azanyl-3-(3-oxidanyl-3-oxidanylidene-propanoyl)oxy-propanoic acid	0.769
7	K5L	(2~{R})-2-azanyl-3-(3-oxidanyl-3-oxidanylidene-propanoyl)oxy-propanoic acid	0.769
8	0AH	O-(bromoacetyl)-L-serine	0.750
9	73C	(2~{S})-2-azanyl-3-butoxy-propanoic acid	0.750
10	SRZ	Propoxy-L-serine	0.750
11	TH5	O-acetyl-L-threonine	0.750
12	TIS	O-(1,1-dihydroxyethyl)-L-serine	0.750
13	JIM	(2r)-2,3-dihydroxypropyl acetate	0.727
14	4PA	Propyl acetate	0.700
15	CA1	Ethyl propionate	0.700