Benzoic acid, 5-[[[(2S)-3-[4-(aminocarbonyl)-2,6-dimethylphenyl]-2-[[(1,1-dimethylethoxy)carbonyl]amino]-1-oxopropyl][(1S)-1-(5-phenyl-1H-imidazol-2-yl)ethyl]amino]methyl]-2-methoxy-, methyl ester