1	8B6	4-oxidanylfuro[3,2-G]chromen-7-one	1.000
2	8MO	Methoxsalen	0.824
3	PYQ	Pyroquilon	0.750
4	COU	Coumarin	0.733
5	PSO	4'-hydroxymethyl-4,5',8-trimethylpsoralen	0.700