1 BFW 4-N-furfurylcytosine 1.000 2 A1BFL N-{[(2r)-oxolan-2-yl]methyl}pyridin-4-amine 0.800 3 H35 N-(furan-2-ylmethyl)-7h-purin-6-amine 0.765 4 LQV (2s)-N-(5-methylpyridin-2-yl)oxolane-2-carboxamide 0.706