(2E,4S,2'S,2''S)-4-({3',3'-dimethyl-2'-[3''-methyl-2''-methylamino-3''-(1-methylindol-3-yl)butyrylamino]butyryl}methylamino)-2,5-dimethylhex-2-enoic acid ethylester

N,N-di(tert-butoxycarbonyl)-(2S)-2-[(benzothiazole-2-sulfonyl)methylamino]-3-methyl-3-(1-methylindol-3-yl)butyramide

(2E,4S,2'S,2''S)-4-({2'-[2''-[(benzothiazole-2-sulfonyl)methylamino]-3''-methyl-3''-(1-methylindol-3-yl)-butyrylamino]-3',3'-dimethylbutyryl}methylamino)-2,5-dimethylhex-2-enoic acid ethylester