The molecule is a tripeptide composed of L-lysine, L-serine and L-tryptophan joined in sequence by peptide linkages. It derives from a L-lysine, a L-serine and a L-tryptophan.
(2S)-2-[[(2S)-2-[[(2S)-2,6-diaminohexanoyl]amino]-3-hydroxypropanoyl]amino]-3-(1H-indol-3-yl)propanoic acid