00600001_00625000/614572 AIDS-032488 AIDS032488 Ala-Ala-Phe-EtCONH2 deriv. L-Alanyl-N1-{(1S,2S,4R)-1-benzyl-5-[(diphenylmethyl)amino]-2-hydroxy-4-methyl-5-oxopentyl}-L-alaninamide