(R)-N-(1-hydroxy-3-(1H-indol-3-yl)propan-2-yl)-8,9-diisopropoxy-3-phenyl-5,6-dihydropyrrolo[2,1-a]isoquinoline-2-carboxamide

(R)-N-(1-hydroxy-3-(1H-indol-3-yl)propan-2-yl)-3-isobutyl-9-isopropoxy-8-methoxy-5,6-dihydropyrrolo[2,1-a]isoquinoline-2-carboxamide

N-methyl-L-Ile-L-Trp-ol

N-CD3-D-Val-L-Trp-ol

N-Me-L-allo-Ile-L-Trp-ol