2,2,2-trichloroethyl (3R)-3-(((2S)-1-(allyloxy)-3-methoxy-1-oxopropan-2-yl)carbamoyl)-2-(((3S)-1-((2,2,2-trichloroethoxy)carbonyl)-2-(N-((2,2,2-trichloroethoxy)carbonyl)-D-valyl)hexahydropyridazin-3-yl)carbonyl)tetrahydropyridazine-1(2H)-carboxylate