Cyclo-(L-leucyl=>L-prolyl=>L-prolyl)

盐酸

环(L-脯氨酰-L-亮氨酰)

cyclo(L-Pro-L-Tyr-L-Pro-L-Ile-L-Phe-L-Pro-L-Ile)

D-Ala-L-Pro-OH trifluoroacetate