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