1-beta-D-Arabinofuranosyl-N(sup 4)-hyristoylcytosine 55726-43-7 BRN 0770122 CYTOSINE, 1-beta-D-ARABINOFURANOSYL-N(sup 4)-MYRISTOYL- N(sup 4)-Myristoyl-1-beta-D-arabinofuranosylcytosine