The molecule is an 8 amino acid peptide fragment of neurotensin. It has a role as a human metabolite. It is a tautomer of a neurotensin (1-8) dizwitterion.
(4S)-5-[[(2S)-4-amino-1-[[(2S)-6-amino-1-[(2S)-2-[[(1S)-1-carboxy-4-(diaminomethylideneamino)butyl]carbamoyl]pyrrolidin-1-yl]-1-oxohexan-2-yl]amino]-1,4-dioxobutan-2-yl]amino]-4-[[(2S)-3-(4-hydroxyphenyl)-2-[[(2S)-4-methyl-2-[[(2S)-5-oxopyrrolidine-2-carbonyl]amino]pentanoyl]amino]propanoyl]amino]-5-oxopentanoic acid