CAS No 144822-48-0 , 1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-2-fluoro-beta-D-arabinofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-2-fluoro-beta-D-arabinofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione