Herbicolin A

N-[N-[(R)-3-[(α-D-Glucopyranosyl)oxy]-1-oxotetradecyl]-2-ethylidene-Gly-]cyclo(L-Thr*-D-aThr-D-Leu-Gly-D-Gln-Gly-N-methyl-L-aThr-L-Arg-)