13491-47-9 Acetamide, N-(1-beta-D-arabinofuranosyl-1,2-dihydro-2-oxo-4-pyrimidinyl)- N-(1-beta-D-Arabinofuranosyl-1,2-dihydro-2-oxo-4-pyrimidinyl)acetamide N-Acetylarabinosylcytosine N-Acetylcytosine arabinoside NSC 110571