4-BUTYL (.ALPHA.R,.GAMMA.S)-.GAMMA.-((3-CARBOXY-1-OXOPROPYL)AMINO)-.ALPHA.-METHYL(1,1'-BIPHENYL)-4-PENTANOATE
4-butyl (.alpha.r,.gamma.s)-.gamma.-((3-carboxy-1-oxopropyl)amino)-.alpha.-methyl(1,1'-biphenyl)-4-pentanoate