3-allyl 1-benzyl (R)-2-((S)-1-((benzyloxy)carbonyl)hexahydropyridazine-3-carbonyl)tetrahydropyridazine-1,3(2H)-dicarboxylate

2-((9H-fluoren-9-yl)methyl) 1-benzyl (S)-3-((R)-6-((allyloxy)carbonyl)-2-((benzyloxy)carbonyl)hexahydropyridazine-1-carbonyl)tetrahydropyridazine-1,2-dicarboxylate