1-(p-Anilinomalonyl-3-(N-ortho-toluidino-N-.beta.-cyanoethylamino) -5-phenylpyrazoline 3-(3-((2-Cyanoethyl)-2-methylanilino)-5-phenyl-4,5-dihydro-1H-pyrazol-1-yl)-3-oxo-N-phenylpropanamide AIDS-134923 AIDS134923 NSC633977