(rac.)-(1R*,5S*)-3-{6-[2-(2,6-Dichloro-4-methyl-phenoxy)-ethoxy]-pyridin-3-yl}-8-aza-bicyclo[3.2.1]oct-2-ene-2,8-dicarboxylic Acid 8-tert-butyl Ester 2-methyl Ester (HCID 131728977)|Huagongshe