1-beta-D-Arabinofuranosyl-N(sup 4)-stearoylcytosine 55726-44-8 BRN 0771319 CYTOSINE, 1-beta-D-ARABINOFURANOSYL-N(sup 4)-STEAROYL- N(sup 4)-Stearoyl-1-beta-D-arabinofuranosylcytosine