L-Histidinamide, N2-((2,3,4,9-tetrahydro-1H-pyrido(3,4-b)indol-3-yl)carbonyl)-L-glutaminyl-L-tryptophyl-L-alanyl-L-valylglycyl-N-(1-((3-(aminocarbonyl)-1,3,4,9-tetrahydro-2H-pyrido(3,4-b)indol-2-yl)methyl)-3-methylbutyl)-, (1(S),6(S-(R*,R*)))-