2-[2-(benzyloxycarbonyl-methyl-amino)-3-phenyl-propionylamino]-3-methyl-butyric acid tert-butyl ester

3-{[2-(1-tert-butoxycarbonylamino-ethyl)-thiazole-4-carbonyl]-amino}-2-methyl-hexanoic acid 1-({1-[(1-tert-butoxycarbonyl-2-methyl-propyl)-methyl-carbamoyl]-2-phenyl-ethyl}-methyl-carbamoyl)-ethyl ester