((S)-2-{(S)-2-[(S)-2-((S)-2-{(R)-2-[(S)-2-tert-Butoxycarbonylamino-3-(4-hydroxy-phenyl)-propionylamino]-propionylamino}-3-phenyl-propionylamino)-3-carbamoyl-propionylamino]-3-methyl-butyrylamino}-3-methyl-butyrylamino)-acetic acid ethyl ester

tert-butyl (6S,9R,12S,15S)-15-(((S)-1-((2-(((S)-1-amino-3-methyl-1-oxobutan-2-yl)amino)-2-oxoethyl)amino)-3-methyl-1-oxobutan-2-yl)carbamoyl)-12-benzyl-6-(4-hydroxybenzyl)-2,2,9-trimethyl-4,7,10,13-tetraoxo-3-oxa-5,8,11,14-tetraazaheptadecan-17-oate

(S)-3-((S)-2-{(R)-2-[(S)-2-tert-Butoxycarbonylamino-3-(4-hydroxy-phenyl)-propionylamino]-propionylamino}-3-phenyl-propionylamino)-N-{[(S)-1-((S)-1-carbamoyl-2-methyl-propylcarbamoyl)-2-methyl-propylcarbamoyl]-methyl}-succinamic acid tert-butyl ester

ethyl (6S,9R,12S,15S,18S,21S)-12-benzyl-15-(2-(tert-butoxy)-2-oxoethyl)-6-(4-hydroxybenzyl)-18,21-diisopropyl-2,2,9-trimethyl-4,7,10,13,16,19,22-heptaoxo-3-oxa-5,8,11,14,17,20,23-heptaazapentacosan-25-oate

(S)-3-((S)-2-{(R)-2-[(S)-2-tert-Butoxycarbonylamino-3-(4-hydroxy-phenyl)-propionylamino]-propionylamino}-3-phenyl-propionylamino)-N-{(S)-1-[(S)-1-(carbamoylmethyl-carbamoyl)-2-methyl-propylcarbamoyl]-2-methyl-propyl}-succinamic acid benzyl ester