4,10-anhydro[N-[[(4R)-2-[(1R,2S)-1-amino-2- methylbutyl]-4,5-dihydro-1,3-thiazol-4-yl]carbonyl]- L-leucyl-D-α-glutamyl-L-isoleucyl-L-lysyl-D-ornithylL-isoleucyl-D-phenylalanyl-L-histidyl-D-α-aspartyl-Lasparagine] (bacitracin X);