Ac-Phe-MeA-MeA-MeA-OH

2-(1-amino-1-methyl-ethyl)-4,4-dimethyl-4H-oxazol-5-one

Z-(Aib)4-OtBu

N-[benzyloxycarbonyl]-2-methylalanyl-2-methylalanyl-2-methylalanyl-2-methylalanine

benzyl N-[8-(4,4-dimethyl-5-oxo-4,5-dihydrooxazol-2-yl)-2,5,5,8-tetramethyl-3,6-dioxo-4,7-diazanon-2-yl]carbamate