The molecule is a synthetic pentapeptide comprising N-acetyl-L-valine (Ac-Val), N-cyclohexylglycine (Chg), L-arginine (Arg), (2S)-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid (Tic)and L-phenylalaninamide (Phe-NH2) residues coupled in sequence.
(3S)-2-[(2S)-2-[[2-[[(2S)-2-acetamido-3-methylbutanoyl]-cyclohexylamino]acetyl]amino]-5-(diaminomethylideneamino)pentanoyl]-N-[(2S)-1-amino-1-oxo-3-phenylpropan-2-yl]-3,4-dihydro-1H-isoquinoline-3-carboxamide