(4S)-4-amino-5-[[(2S)-1-[[(2S)-1-[[(2S,3S)-1-[[(1S)-1-carboxy-2-hydroxyethyl]amino]-3-methyl-1-oxopentan-2-yl]amino]-3-methyl-1-oxobutan-2-yl]amino]-4-methyl-1-oxopentan-2-yl]amino]-5-oxopentanoic acid; Glutamyl-leucyl-valyl-isoleucyl-serine; Glu-leu-val-ile-ser; ELVIS