4,10-ANHYDRO(N-(((4R)-2-((1S,2S)-1-AMINO-2-METHYLBUTYL)-4,5-DIHYDRO-1,3-THIAZOL-4-YL)CARBONYL)-L-LEUCYL-D-.ALPHA.-GLUTAMYL-L-VALYL-L-LYSYL-D-ORNITHYL-L-VALYL-D-PHENYLALANYL-L-HISTIDYL-D-.ALPHA.-ASPARTYL-L-ASPARAGINE)
4,10-anhydro(n-(((4r)-2-((1s,2s)-1-amino-2-methylbutyl)-4,5-dihydro-1,3-thiazol-4-yl)carbonyl)-l-leucyl-d-.alpha.-glutamyl-l-valyl-l-lysyl-d-ornithyl-l-valyl-d-phenylalanyl-l-histidyl-d-.alpha.-aspartyl-l-asparagine)