[2-((S)-2-Methyl-1-{(S)-1-[(S)-2-methyl-1-((S)-1-{(S)-2-methyl-1-[(S)-1-(4-nitro-phenylsulfanylcarbonyl)-ethoxycarbonyl]-propylcarbamoyl}-ethoxycarbonyl)-propylcarbamoyl]-ethoxycarbonyl}-propylcarbamoyloxy)-ethyl]-triphenyl-phosphonium; chloride

Peoc-Lac-Val-Lac-OtBu

Peoc-3-OtBu