N-(5-((4-aminobutyl)amino)-2-hydroxy-5-oxo-1-(cyclohexylmethyl)-4-(4-pyridinylmethyl)-1-pentyl)-N-((1,1-dimethylethoxy)carbonyl)phenylalanyl-L-histidinamide
n-(5-((4-aminobutyl)amino)-2-hydroxy-5-oxo-1-(cyclohexylmethyl)-4-(4-pyridinylmethyl)-1-pentyl)-n-((1,1-dimethylethoxy)carbonyl)phenylalanyl-l-histidinamide