1 E15 (4r)-3-[(2s,3s)-3-[[(2s)-2-[[(2s)-2-azanyl-2-phenyl-ethanoyl]amino]-3,3-dimethyl-butanoyl]amino]-2-hydroxy-4-phenyl-but anoyl]-5,5-dimethyl-N-[(2r)-3-methylbutan-2-yl]-1,3-thiazolidine-4-carboxamide 1.000 2 E16 (4r)-3-[(2s,3s)-3-[[(2s)-2-[[(2s)-2-azanyl-2-phenyl-ethanoyl]amino]-3,3-dimethyl-butanoyl]amino]-2-hydroxy-4-phenyl-but anoyl]-N-[(2r)-3,3-dimethylbutan-2-yl]-5,5-dimethyl-1,3-thiazolidine-4-carboxamide 0.979 3 E14 (4r)-3-[(2s,3s)-3-[[(2s)-2-[[(2s)-2-azanyl-2-phenyl-ethanoyl]amino]-3,3-dimethyl-butanoyl]amino]-2-hydroxy-4-phenyl-but anoyl]-5,5-dimethyl-N-(2-methylpropyl)-1,3-thiazolidine-4-carboxamide 0.978 4 E13 N-[(2s,3s)-4-{(4r)-4-[(2,2-dimethylpropyl)carbamoyl]-5,5-dimethyl-1,3-thiazolidin-3-yl}-3-hydroxy-4-oxo-1-phenylbutan-2-yl]-N~2~-{(2s)-2-[(methoxycarbonyl)amino]-2-phenylacetyl}-3-methyl-L-valinamide 0.846 5 E17 N-{(1s,2s)-1-benzyl-3-[(4r)-5,5-dimethyl-4-{[(1r)-1,2,2-trimethylpropyl]carbamoyl}-1,3-thiazolidin-3-yl]-2-hydroxy-3-oxopropyl}-3-methyl-N~2~-{(2s)-2-[(morpholin-4-ylacetyl)amino]-2-phenylacetyl}-L-valinamide 0.789