1N,4N-Di[1-carboethoxy-2-phenyl-(1S)-ethyl]-2,3-deacetoxy-(2S,3S)butanediamide 2-[2,3-Diacetoxy-3-(1-ethoxycarbonyl-2-phenyl-ethylcarbamoyl)-propionylamino]-3-phenyl-propionic acid, ethyl ester AIDS-163238 AIDS163238