InChI=1/C19H19NO3/c1-19(2,3)23-18(21)13-22-17-10-8-16(9-11-17)15-6-4-14(12-20)5-7-15/h4-11H,13H2,1-3H acetic acid, [(4'-cyano[1,1'-biphenyl]-4-yl)oxy]-, 1,1-dimethylethyl ester tert-butyl [(4'-cyanobiphenyl-4-yl)oxy]acetate