3-Azabicyclo[3.3.1]nonan-7-one deriv. 5(R/S)-[(4'-Bromophenyl)methyl]-9(R/S)-hydroxy-1(R/S)-hydroxymethyl-3-(1',1-dimethylethyl)-3-azabicyclo[3.3.1]nonan-7-one AIDS-057776 AIDS057776