IUPAC:1-[(2R,4S,5R)-4-hydroxy-5-[hydroxy(13C)methyl](2,3,4,5-13C4)oxolan-2-yl]-5-(13C)methyl-1,2,3,4-tetrahydro(2,4,5,6-13C4,1,3-15N2)pyrimidine-2,4-dione
IUPAC:1-[(2R,4S,5R)-4-hydroxy-5-[hydroxy(13C)methyl](2,3,4,5-13C4)oxolan-2-yl]-5-(13C)methyl-1,2,3,4-tetrahydro(2,4,5,6-13C4,1,3-15N2)pyrimidine-2,4-dione