[hydroxy-[[(2r,3s,5r)-3-hydroxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy]phosphoryl] [(2r,4s,5r,6s)-5-methoxy-4,6-dimethyl-4-nitrosooxan-2-yl] hydrogen phosphate is a chemical compound with the formula C18H29N3O14P2. With an average molecular weight of 573.40 g/mol, [hydroxy-[[(2r,3s,5r)-3-hydroxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy]phosphoryl] [(2r,4s,5r,6s)-5-methoxy-4,6-dimethyl-4-nitrosooxan-2-yl] hydrogen phosphate is a heavy molecule.