dimethyl 2,2'-(((2S,2'S)-1,1'-((2R,2'R)-3,3'-diselanediylbis(2-((tert-butoxycarbonyl)amino)propanoyl))bis(pyrrolidine-1,2-diyl-2-carbonyl))bis(azanediyl))(2S,2'S)-bis(3-phenylpropanoate)

dimethyl 2,2'-(((2S,2'S)-1,1'-((2R,2'R)-3,3'-disulfanediylbis(2-((tert-butoxycarbonyl)amino)propanoyl))bis(pyrrolidine-1,2-diyl-2-carbonyl))bis(azanediyl))(2S,2'S)-bis(3-phenylpropanoate)

dimethyl 2,2'-(((2S,2'S)-1,1'-((2R,2'R)-3,3'-diselanediylbis(2-aminopropanoyl))bis(pyrrolidine-1,2-diyl-2-carbonyl))bis(azanediyl))(2S,2'S)-bis(3-phenylpropanoate)

dimethyl 2,2'-(((2S,2'S)-1,1'-((2R,2'R)-3,3'-disulfanediylbis(2-aminopropanoyl))bis(pyrrolidine-1,2-diyl-2-carbonyl))bis(azanediyl))(2S,2'S)-bis(3-phenylpropanoate)

methyl ((R)-2-amino-3-hydroselenopropanoyl)-L-prolyl-L-phenylalaninate