22242-89-3 7H-Pyrrolo[2,3-d]pyrimidine-5-carboxamidoxime, 4-amino-7-.beta.-D-ribofuranosyl- 7H-Pyrrolo[2,3-d]pyrimidine-5-carboximidamide, 4-amino-N-hydroxy-7-.beta.-D-ribofuranosyl- NSC107512