4-((17S,20S)-1-(2,5-二氧代-2,5-二氢-1H-吡咯-1-基)-17-异丙基-15,18-二氧代-20-(3-脲基丙基)-3,6,9,12-四氧杂-16,19-二氮杂二十一酰胺基)苄基 (4-硝基苯基)碳酸酯
4-((17S,20S)-1-(2,5-Dioxo-2,5-dihydro-1H-pyrrol-1-yl)-17-isopropyl-15,18-dioxo-20-(3-ureidopropyl)-3,6,9,12-tetraoxa-16,19-diazahenicosanamido)benzyl (4-nitrophenyl) carbonate
4-((17S,20S)-1-(2,5-二氧代-2,5-二氢-1H-吡咯-1-基)-17-异丙基-15,18-二氧代-20-(3-脲基丙基)-3,6,9,12-四氧杂-16,19-二氮杂二十一酰胺基)苄基 (4-硝基苯基)碳酸酯 95%