1	NBU	N-butane	1.000
2	A1IG4	(E)-but-2-ene	1.000
3	1BO	1-butanol	0.800
4	61G	2-methylbuta-1,3-diene	0.800
5	8PN	(2s)-but-3-yn-2-amine	0.800
6	9A4	(2z)-but-2-en-1-ol	0.800
7	9A7	(2e)-but-2-en-1-ol	0.800
8	BBU	1-bromobutane	0.800
9	CRD	(2e)-but-2-enal	0.800
10	LNK	Pentane	0.800
11	LYT	Butylamine	0.800
12	SBT	2-butanol	0.800
13	TME	Propane	0.750