IUPAC:4-amino-1-[(2R,3R,4S,5R)-3,4-dihydroxy-5-[hydroxy(13C)methyl](2,3,4,5-13C4)oxolan-2-yl]-1,2-dihydro(2,4,5,6-13C4,1,3-15N2)pyrimidin-2-one
IUPAC:4-amino-1-[(2R,3R,4S,5R)-3,4-dihydroxy-5-[hydroxy(13C)methyl](2,3,4,5-13C4)oxolan-2-yl]-1,2-dihydro(2,4,5,6-13C4,1,3-15N2)pyrimidin-2-one