1 B9L N-[(2s)-1-hydroxy-3-(1h-indol-3-yl)propan-2-yl]-nalpha-methyl-L-phenylalaninamide 1.000 2 B9R N-[(2s)-1-hydroxy-3-(1h-indol-3-yl)propan-2-yl]-N~2~-methyl-L-valinamide 0.714