1	SPK	Spermine (fully protonated form)	1.000
2	SPM	Spermine	1.000
3	SPJ	(3r,3'R)-N~1~,N~1~'-butane-1,4-diyldibutane-1,3-diamine	0.875
4	SPZ	(3s,3'S)-N~1~,N~1~'-butane-1,4-diyldibutane-1,3-diamine	0.875
5	Q9C	N-{4-[(3-aminopropyl)amino]butyl}acetamide	0.800
6	298	N-[(1e,2z)-but-2-en-1-ylidene]-N'-[(2e)-but-2-en-1-ylidene]butane-1,4-diamine	0.750
7	MD2	N,N'-bis(2,3-butadienyl)-1,4-butane-diamine	0.750
8	X54	1-({4-[(3-aminopropyl)amino]butyl}amino)ethane-1,1-diol	0.750
9	SP5	N-[3-({4-[(3-aminopropyl)amino]butyl}amino)propyl]acetamide	0.722