1	298	N-[(1e,2z)-but-2-en-1-ylidene]-N'-[(2e)-but-2-en-1-ylidene]butane-1,4-diamine	1.000
2	MD2	N,N'-bis(2,3-butadienyl)-1,4-butane-diamine	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	SPK	Spermine (fully protonated form)	0.750
6	SPM	Spermine	0.750