IUPAC: ({hydroxy[({[(2R,3S,5R)-3-hydroxy-5-(5-methyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-1-yl)oxolan-2-yl]methoxy}(sulfanyl)phosphoryl)oxy]phosphoryl}oxy)phosphonic acid

SMILES: Cc1cn([C@H]2C[C@H](O)[C@@H](COP(S)(=O)OP(O)(=O)OP(O)(O)=O)O2)c(=O)[nH]c1=O