(R)-2-((S)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)-D-valyl)hexahydropyridazine-3-carbonyl)hexahydropyridazine-3-carboxylic acid

benzyl (S)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)-D-valyl)-3-((R)-6-(((S)-1-(allyloxy)-3-methoxy-1-oxopropan-2-yl)carbamoyl)-2-((benzyloxy)carbonyl)hexahydropyridazine-1-carbonyl)tetrahydropyridazine-1(2H)-carboxylate