(3S,4S)-3-Acetylsulfanyl-4-[(S)-2-(4-methoxy-phenyl)-1-methylcarbamoyl-ethylcarbamoyl]-6-methyl-heptanoic acid tert-butyl ester

(3S,4S)-3-Acetylsulfanyl-4-[(S)-2-(4-methoxy-phenyl)-1-methylcarbamoyl-ethylcarbamoyl]-6-methyl-heptanoic acid methyl ester

3-(S)-mercapto-6-methyl-4-(S)-[({1-(S)-[(methylamino)carbonyl]-2-(3-indolyl)ethyl}amino)carbonyl]heptanoic acid methyl ester

3-(R)-acetylthio-6-methyl-4-(R)-<<<1-(S)-<(methylamino)carbonyl>-2-(3-indolyl)ethyl>amino>carbonyl>heptanoic acid methyl ester

3-(S)-acetylthio-6-methyl-4-(S)-[({1-(S)-[(methylamino)carbonyl]-2-(3-indolyl)ethyl}amino)carbonyl]heptanoic acid methyl ester