for the following products
(trans,trans)-4-(4-Ethoxy-2,3-difluorophenyl)-4'-pentyl-1,1'-bi(cyclohexane) | trans,trans-4''-(4-Ethoxy-2,3-difluoro-phenyl)-4-pentyl-bicyclohexyl and 1-Ethoxy-2,3-difluoro-4-[(trans,trans)-4'-pentyl[1,1'-bicyclohexyl]-4-yl]benzene
