(Z)-D-Ser{(Z)-D-Ser[Boc-L-Ala-L-Cys(Acm)-L-Val]-L-Ala-L-Cys(Acm)-L-Val}-OH

N-((benzyloxy)carbonyl)-O-(((3S,6R,11R,14S,17R)-17-(((benzyloxy)carbonyl)amino)-6-((S)-2-((tert-butoxycarbonyl)amino)propanamido)-3-isopropyl-14-methyl-2,5,13,16-tetraoxo-1-oxa-8,9-dithia-4,12,15-triazacyclooctadecane-11-carbonyl)-L-valyl)-D-serine

Z-O-叔丁基-D-丝氨酸

Z-D-Ser-OTce

Z-D-Ser(But)-OTce