1-Oxa-3,9-diazacyclopentadecane-8,12-dicarboxylic acid,2,10-dioxo-11-[[2'-(trifluoromethyl)[1,1'-biphenyl]-4-yl]methyl]-,12-(1,1-dimethylethyl) 8-methyl ester, (8S,11R,12S)-