AIDS-097493 AIDS097493 [1S-[1R*,2S*(2S*,3R*)]]-[2-Hydroxy-3-[[2-hydroxy-3-[[2-hydroxy-1-oxo-2-(2-pyridinyl)propyl]amino]-3-phenylbutyl]amino]-1-(phenylmethyl)propyl]carbamic acid, 1,1-dimethyethyl ester