114667-74-2 BU-E 75 BU-E-75 Bua 75 Guanidine, N-(3-(3,4-difluorophenyl)-3-(2-pyridinyl)propyl)-N'-(3-(1H-imidazol-4-yl)propyl)- N(1)-(3-(3,4-Difluorophenyl)-3-pyridine-2-ylpropyl)-N(2)-(3-(1H-imidazol-4-yl)propyl)guanidine