(S)-2-{(S)-2-[(S)-2-(2-Amino-acetylamino)-3-(1H-indol-3-yl)-propionylamino]-4-methylsulfanyl-butyrylamino}-N-((S)-1-carbamoyl-2-phenyl-ethyl)-succinamic acid tert-butyl ester

benzyloxycarbonylglycyl-L-tryptophyl-L-methionyl-α-tert-butyl-L-aspartyl-β-L-phenylalanine amide

tert-butyloxycarbonyl-L-methionylglycyl-L-tryptophyl-L-methionyl-α-tert-butyl-L-aspartyl-β-L-phenylalanine amide