1 5EX Ethyl (2z,4s)-4-[(N-{[(cyclobutylmethyl)amino](oxo)acetyl}-L-phenylalanyl)amino]-5-[(3s)-2-oxopyrrolidin-3-yl]pent-2-enoate 1.000 2 5F2 Ethyl (2z,4s)-4-[(N-acetyl-L-phenylalanyl)amino]-5-[(3s)-2-oxopyrrolidin-3-yl]pent-2-enoate 0.811 3 5ED Ethyl (2z,4s)-4-[(N-{[(2-cyclopropylethyl)amino](oxo)acetyl}-L-phenylalanyl)amino]-5-[(3s)-2-oxopyrrolidin-3-yl]pent-2-enoate 0.805 4 5EC Ethyl (2z,4s)-4-{[N-(3-methylbutanoyl)-L-phenylalanyl]amino}-5-[(3s)-2-oxopyrrolidin-3-yl]pent-2-enoate 0.750 5 5EB Ethyl (2z,4s)-4-{[N-(3-cyclopropylpropanoyl)-L-phenylalanyl]amino}-5-[(3s)-2-oxopyrrolidin-3-yl]pent-2-enoate 0.732 6 EGF ~{N}-[(2~{S})-1-[[(2~{S},3~{S},6~{S},7~{z},12~{E})-4,9-bis(oxidanylidene)-6-[[(3~{S})-2-oxidanylidenepyrrolidin-3-yl]methyl]-2-phenyl-1,10-dioxa-5-azacyclopentadeca-7,12-dien-3-yl]amino]-3-methyl-1-oxidanylidene-butan-2-yl]-5-methyl-1,2-oxazole-3-carboxamide 0.729 7 5GH Ethyl (4s)-5-[(3s)-2-oxopyrrolidin-3-yl]-4-[(3-phenylpropanoyl)amino]pent-2-enoate 0.703