(1,1'-Biphenyl)-4-carboxylic acid, 4'-((2S)-2-methylbutyl)-, 4-((2S)-2-methylbutyl)phenyl ester (S-(R*,R*))-4-(2-Methylbutyl)phenyl 4-(2-methylbutyl)(1,1'-biphenyl)-4-carboxylate 69777-74-8 EINECS 274-117-2