4-{2-[2-(4-tert-Butoxycarbonylamino-butylcarbamoyl)-1-methyl-1H-imidazol-4-ylcarbamoyl]-1-methyl-1H-imidazol-4-ylcarbamoyl}-butyric acid

[4-({4-[(4-{4-[2-(6-Benzyloxy-3-chloromethyl-2,3-dihydro-indole-1-carbonyl)-benzofuran-5-ylcarbamoyl]-butyrylamino}-1-methyl-1H-imidazole-2-carbonyl)-amino]-1-methyl-1H-imidazole-2-carbonyl}-amino)-butyl]-carbamic acid tert-butyl ester