1-[5-[[[[5-(6-aminopurin-9-yl)-3,4-dihydroxy-oxolan-2-yl]methoxy-hydroxy-phosphoryl]oxy-hydroxy-phosphoryl]oxymethyl]-3,4-dihydroxy-oxolan-2-yl]pyridine-5-carboxylate
1-[5-[[[[5-(6-aminopurin-9-yl)-3,4-dihydroxy-oxolan-2-yl]methoxy-hydroxy-phosphoryl]oxy-hydroxy-phosphoryl]oxymethyl]-3,4-dihydroxy-oxolan-2-yl]pyridine-5-carboxylate