[Allyloxycarbonyl-(2-{2-[tert-butoxycarbonyl-(2-{[(4-methoxy-phenyl)-diphenyl-methyl]-amino}-ethyl)-amino]-acetylamino}-ethyl)-amino]-acetic acid methyl ester

[Allyloxycarbonyl-(2-{2-[tert-butoxycarbonyl-(2-{[(4-methoxy-phenyl)-diphenyl-methyl]-amino}-ethyl)-amino]-acetylamino}-ethyl)-amino]-acetic acid

[(2-{2-[Allyloxycarbonyl-(2-{2-[allyloxycarbonyl-(2-{2-[(2-amino-ethyl)-tert-butoxycarbonyl-amino]-acetylamino}-ethyl)-amino]-acetylamino}-ethyl)-amino]-acetylamino}-ethyl)-tert-butoxycarbonyl-amino]-acetic acid methyl ester