1	APQ	2,6-diamino-8-propylsulfanylmethyl-3h-quinazoline-4-one	1.000
2	BHB	2,6-diamino-8-(2-dimethylaminoethylsulfanylmethyl)-3h-quinazolin-4-one	0.810
3	DQU	2,6-diamino-3h-quinazolin-4-one	0.722
4	MAQ	2-amino-8-methylquinazolin-4(3h)-one	0.722