. "(2R)-4-[8-benzyl-3-(trifluoromethyl)-5,6-dihydro[1,2,4]triazolo[4,3-a]pyrazin-7(8H)-yl]-4-oxo-1-(2,4,5-trifluorophenyl)butan-2-amine hydrochloride" . "42a, diasteromer" . . . . . . . . . .