(2S,3S,4R,5R,6R)-6-[[[(2S,3S,4R,5R)-5-(2,4-dioxopyrimidin-1-yl)-3,4-dihydroxy-oxolan-2-yl]methoxy-hydroxy-phosphoryl]oxy-hydroxy-phosphoryl]oxy-3,4,5-trihydroxy-oxane-2-carboxylic [ 2616-64-0 ]