AIDS-004120 AIDS004120 L685,434 deriv. N-[2(R)-Hydroxy-1(S)-indanyl)-5(S)-[(tert-butyloxycarbonyl)amino]-4(S)-hydroxy-6-phenyl-2(R)-[[4-[2-oxo-2-(4-morpholinyl)ethoxy]phenyl]methyl]hexanamide