PGLU-HIS-GLY AMIDE pglu-his-gly amide trifluoroacetate salt hydrate 5-OXO-L-PROPYL-L-HISTIDYL-GLYCINAMIDE) (2S)-N-((2S)-1-(2-amino-2-oxoethylamino)-3-(4H-imidazol-4-yl)-1-oxopropan-2-yl)-5-oxopyrrolidine-2-carboxamide 2,2,2-trifluoroacetate Pyr-His-Gly amide trifluoroacetate GlycinaMide, 5-oxo-L-prolyl-L-histidyl- Glycinamide, 5-oxo-L-prolyl-L-histidyl- (9CI)