IUPAC: ({[({[(2R,3S,4R,5R)-5-(3,5-dioxo-2,3,4,5-tetrahydro-1,2,4-triazin-2-yl)-3,4-dihydroxyoxolan-2-yl]methoxy}(hydroxy)phosphoryl)oxy](hydroxy)phosphoryl}oxy)phosphonic acid

SMILES: O[C@@H]1[C@@H](COP(O)(=O)OP(O)(=O)OP(O)(O)=O)O[C@H]([C@@H]1O)n1ncc(=O)[nH]c1=O