s-triazolo(1,5-a)pyrimidin-5(1H)-one, 2-(methylthio)-7-propyl-6-((2'-(1H-tetrazol-5-yl) (1,1'-biphenyl)-4- yl)methyl)-

8-methylsulfanyl-2-propyl-3-[[4-[2-(2H-tetrazol-5-yl)phenyl]phenyl]met hyl]-1,5,7,9-tetrazabicyclo[4.3.0]nona-2,5,7-trien-4-one