The molecule is a tetrapeptide composed of L-aspartic acid, L-phenylalanine, L-valine, and L-tyrosine units joined in sequence. It derives from a L-aspartic acid, a L-phenylalanine, a L-valine and a L-tyrosine.
(3S)-3-amino-4-[[(2S)-1-[[(2S)-1-[[(1S)-1-carboxy-2-(4-hydroxyphenyl)ethyl]amino]-3-methyl-1-oxobutan-2-yl]amino]-1-oxo-3-phenylpropan-2-yl]amino]-4-oxobutanoic acid