-5-<<2-<<2-<<(1,1-dimethylethoxy)carbonyl>amino>-2-phenylethyl>amino>-1-(1H-indol-3-ylmethyl)-1-methyl-2-oxoethyl>amino>-5-oxopentanoic acid

1,1-dimethylethyl -<2-<<2-amino-3-(1H-indol-3-yl)-2-methyl-1-oxopropyl>amino>-1-phenylethyl>carbamate

<2R-(2R*,6R*)>-2-(1H-indol-3-ylmethyl)-2-methyl-6-phenyl-1,4,7-triazacyclotridecan-3,8,13-trione

-4-<<2-<<2-<<(1,1-dimethylethoxy)carbonyl>amino>-2-phenylethyl>amino>-1-(1H-indol-3-ylmethyl)-1-methyl-2-oxoethyl>amino>-4-oxobutanoic acid

methyl -5-<<2-<<2-<<(1,1-dimethylethoxy)carbonyl>amino>-2-phenylethyl>amino>-1-(1H-indol-3-ylmethyl)-1-methyl-2-oxoethyl>amino>-5-oxopentanoate