1	2FU	But-2-enedial	1.000
2	89N	(2e)-but-2-ene-1,4-diol	1.000
3	BU1	1,4-butanediol	1.000
4	0V1	(2~{S})-butane-1,2,4-triol	0.857
5	6OM	(2z)-2-methylbut-2-ene-1,4-diol	0.857
6	BGQ	2-hydroxy butane-1,4-diol	0.857
7	SSN	4-oxobutanoic acid	0.857
8	1BO	1-butanol	0.833
9	9A4	(2z)-but-2-en-1-ol	0.833
10	9A7	(2e)-but-2-en-1-ol	0.833
11	CRD	(2e)-but-2-enal	0.833
12	1MI	2-(hydroxymethyl)butane-1,4-diol	0.750
13	3VB	D-threitol	0.750
14	A1EJ2	D-erythrose	0.750
15	AS2	(2r)-2-amino-4-oxobutanoic acid	0.750
16	ASA	Aspartic aldehyde	0.750
17	ASJ	(3s)-3-amino-4-hydroxybutanoic acid	0.750
18	B3S	(3r)-3-amino-4-hydroxybutanoic acid	0.750
19	DTL	L-treitol	0.750
20	DYD	(2s,5s)-hexane-2,5-diol	0.750
21	FUM	Fumaric acid	0.750
22	H95	(2~{S},5~{R})-hexane-2,5-diol	0.750
23	HSE	L-homoserine	0.750
24	HX2	(2r,5r)-hexane-2,5-diol	0.750
25	LER	L-erythrulose	0.750
26	MAE	Maleic acid	0.750
27	MRY	Meso-erythritol	0.750
28	SHF	Laevulinic acid	0.750
29	SIN	Succinic acid	0.750
30	SJ3	(4r)-4-hydroxypentanoic acid	0.750
31	VGX	4-hydroxy-2-oxobutanoic acid	0.750
32	XXD	(2s)-pentane-1,2,5-triol	0.750
33	2RP	(2r)-pentan-2-ol	0.714
34	3BB	3-bromobut-3-en-1-ol	0.714
35	4HA	4-hydroxybutan-1-aminium	0.714
36	5KO	(3r)-3-hydroxybutanal	0.714
37	A1BNQ	Acetoacetyl group	0.714
38	BEO	Butenoic acid	0.714
39	BMD	Butyramide	0.714
40	BU2	1,3-butanediol	0.714
41	BU4	(3r)-butane-1,3-diol	0.714
42	BUA	Butanoic acid	0.714
43	BUQ	4-hydroxy-2-butanone	0.714
44	I5Q	(2s)-butane-1,2-diol	0.714
45	NZ5	(2~{R})-butane-1,2-diol	0.714
46	P1W	3-methylbut-2-en-1-ol	0.714
47	PE9	Pentan-1-ol	0.714
48	PNH	Pentan-2-one	0.714
49	PTL	Pentanal	0.714