[21-[[(1,1-dimethylethoxy)carbonyl]amino]-4,25,25-trimethyl-10,12,23-trioxo-24-oxa-4,9,13,20,22-pentaaza-21-hexacosen-1-yl]carbamic acid, 1,1-dimethylethyl ester

[3-[[(1,1-dimethylethoxy)carbonyl]amino]propyl][17-[[(1,1-dimethylethoxy)carbonyl]amino]-4,21,21-trimethyl-6,8,19-trioxo-20-oxa-5,9,16,18-tetraaza-17-docosen-1-yl]carbamin acid, 1,1-dimethylethyl ester

[21-[[(1,1-dimethylethoxy)carbonyl]amino]-1,25,25-trimethyl-10,12,23-trioxo-4-(phenylmethyl)-24-oxa-4,9,13,20,22-pentaaza-21-hexacosen-1-yl]carbamic acid, 1,1-dimethylethyl ester

[17-[[(1,1-dimethylethoxy)carbonyl]amino]-21,21-dimethyl-6,8,19-trioxo-20-oxa-5,6,16,18-tetraaza-17-docosen-1-yl][3-[[(1,1-dimethylethoxy)carbonyl]amino]-1-methylpropyl]carbamic acid, 1,1-dimethylethyl ester

[3-[[(1,1-dimethylethoxy)carbonyl]amino]propyl][17-[[(1,1-dimethylethoxy)carbonyl]amino]-1,21,21-trimethyl-6,8,19-trioxo-20-oxa-5,9,16,18-tetraaza-17-docosen-1-yl]carbamic acid, 1,1-dimethylethyl ester