126409-24-3 L 682679 L-682,679 L-682679 L-Phenylalaninamide, N-(5-(((1,1-dimethylethoxy)carbonyl)amino)-4-hydroxy-1-oxo-6-phenyl-2-(phenylmethyl)hexyl)-L-leucyl-, (2R-(2R*,4S*,5S*))-