s-triazolo(1,5-a)pyrimidin-5-amine, N-(2-(4-morpholinyl)ethyl)-7-propyl-6- ((2'-(1H-tetrazol-5-yl)(1,1'- biphenyl)-4-yl)methyl)-

N-(2-morpholin-4-ylethyl)-2-propyl-3-[[4-[2-(2H-tetrazol-5-yl)phenyl]p henyl]methyl]-1,5,7,9-tetrazabicyclo[4.3.0]nona-2,4,6,8-tetraen-4-amin e