Phosphoric acid (2R,3S,5R)-2-(tert-butyl-dimethyl-silanyloxymethyl)-5-(2-diphenylacetylamino-6-hydroxy-purin-9-yl)-tetrahydro-furan-3-yl ester 2-chloro-phenyl ester 2,2,2-tribromo-ethyl ester

(2R,3S,5R)-2-((((((2R,3S,5R)-5-(4-benzamido-2-oxopyrimidin-1(2H)-yl)-2-(hydroxymethyl)tetrahydrofuran-3-yl)oxy)(2-chlorophenoxy)phosphoryl)oxy)methyl)-5-(2-(2,2-diphenylacetamido)-6-oxo-1,6-dihydro-9H-purin-9-yl)tetrahydrofuran-3-yl 4-oxopentanoate