(2-{[(2R,3S,4R,5R)-5-(6-Amino-purin-9-yl)-3,4-dihydroxy-tetrahydro-furan-2-ylmethyl]-carbamoyl}-ethyl)-carbamic acid benzyl ester

3-(2-Amino-5-nitro-6-oxo-1,6-dihydro-pyrimidin-4-ylamino)-N-[(2R,3S,4R,5R)-5-(6-amino-purin-9-yl)-3,4-dihydroxy-tetrahydro-furan-2-ylmethyl]-propionamide

3-(2-Amino-5-nitroso-6-oxo-1,6-dihydro-pyrimidin-4-ylamino)-N-[(2R,3S,4R,5R)-5-(6-amino-purin-9-yl)-3,4-dihydroxy-tetrahydro-furan-2-ylmethyl]-propionamide

3-amino-N-[[(2R,3S,4R,5R)-5-(6-aminopurin-9-yl)-3,4-dihydroxyoxolan-2-yl]methyl]-propanamide