1,2-Benzenedicarboxylic acid, 4,4'-(2,2,2-trifluoro-1-(trifluoromethyl)ethylidene)bis-, ar,ar'-dimethyl ester 136403-85-5 4,4'-(2,2,2-Trifluoro-1-(trifluoromethyl)ethylidene)bis(1,2-benzenedicarboxylic acid), ar,ar'-dimethyl ester 59301-66-5