2',6'-dimethyl-4'-(N-((4'-phenyl)phenethyl)carboxamido)phenylalanine-tetrahydroisoquinoline-3-carboxylic acid- phenylalanyl-phenylalanine
2',6'-dimethyl-4'-(n-((4'-phenyl)phenethyl)carboxamido)phenylalanine-tetrahydroisoquinoline-3-carboxylic acid- phenylalanyl-phenylalanine