122018-90-0 5,7-Diamino-3-(2,3,5-tri-O-benzyl-beta-ribofuranosyl)pyrazolo(4,3-d)pyrimidine 5-Aminoformycin A D-Ribitol, 1,4-anhydro-1-C-(5,7-diamino-1H-pyrazolo(4,3-d)pyrimidin-3-yl)-2,3,5-tris-O-(phenylmethyl)-, (1S)-