6-(4-aminobiphenyl-3-ylamino)-6-oxohexyl 1-((2R,4R,5R)-5-((tert-butyldimethylsilyloxy)methyl)-3,3-difluoro-4-hydroxytetrahydrofuran-2-yl)-2-oxo-1,2-dihydropyrimidin-4-ylcarbamate hydrochloride