The molecule is a synthetic 17-mer oligopeptide derived from the Ara h2 protein comprising N(2)-acetyl-L-glutaminyl, L-glutaminyl, L-alpha-glutamyl, L-glutaminyl, L-glutaminyl, L-phenylalanyl, L-lysyl, L-arginyl, L-alpha-glutamyl, L-leucyl, L-arginyl, L-asparaginyl, L-leucyl, L-prolyl, L-glutaminyl, L-glutaminyl and L-lysinamide residues coupled in sequence.
(4S)-4-[[(2S)-2-[[(2S)-2-acetamido-5-amino-5-oxopentanoyl]amino]-5-amino-5-oxopentanoyl]amino]-5-[[(2S)-5-amino-1-[[(2S)-5-amino-1-[[(2S)-1-[[(2S)-6-amino-1-[[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-4-amino-1-[[(2S)-1-[(2S)-2-[[(2S)-5-amino-1-[[(2S)-5-amino-1-[[(2S)-1,6-diamino-1-oxohexan-2-yl]amino]-1,5-dioxopentan-2-yl]amino]-1,5-dioxopentan-2-yl]carbamoyl]pyrrolidin-1-yl]-4-methyl-1-oxopentan-2-yl]amino]-1,4-dioxobutan-2-yl]amino]-5-carbamimidamido-1-oxopentan-2-yl]amino]-4-methyl-1-oxopentan-2-yl]amino]-4-carboxy-1-oxobutan-2-yl]amino]-5-carbamimidamido-1-oxopentan-2-yl]amino]-1-oxohexan-2-yl]amino]-1-oxo-3-phenylpropan-2-yl]amino]-1,5-dioxopentan-2-yl]amino]-1,5-dioxopentan-2-yl]amino]-5-oxopentanoic acid