1-beta-D-Arabinofuranosyl-N(sup 4)-palmitoylcytosine 55726-45-9 BRN 0727729 CYTOSINE, 1-beta-D-ARABINOFURANOSYL-N(sup 4)-PALMITOYL- N(4)-Palmitoyl cytarabine N(sup 4)-Palmitoyl-1-beta-D-arabinofuranosylcytosine