(S)-2-{(R)-3-[(R)-2-tert-Butoxycarbonylamino-3-(4-methoxy-phenyl)-propionylamino]-2-methyl-propionyloxy}-4-methyl-pentanoic acid

(E)-(S)-5-((S)-2-{(R)-3-[(R)-2-tert-Butoxycarbonylamino-3-(3-chloro-4-methoxy-phenyl)-propionylamino]-2-methyl-propionyloxy}-4-methyl-pentanoyloxy)-6-oxo-8-phenyl-oct-2-en-7-ynoic acid tert-butyl ester

tert-butyl (5S,6R)-5-[(2S)-2-[(2R)-3-[(2R)-2-tert-butoxycarbonylamino-3-(3-chloro-4-methoxyphenyl)propionylamino]-2-methylpropionyloxy]-4-methylpentanoyloxy]-6-methyl-8-phenylocta-2(E),7(E)-dienoate