The molecule is a tripeptide composed of one L-glutamine and two L-cysteine units joined by peptide linkages. It derives from a L-glutamine and a L-cysteine.
(2R)-2-[[(2R)-2-[[(2S)-2,5-diamino-5-oxopentanoyl]amino]-3-sulfanylpropanoyl]amino]-3-sulfanylpropanoic acid