(E) -4',4'''- (1,2-Di ([1,1'-biphenyl]-4-yl) ethene-1,2-diyl) bis (([1,1'-biphenyl]-4-carboxylic acid) )

95%

OC (C (C=C1) =CC=C1C (C=C2) =CC=C2/C (C3=CC=C (C4=CC=CC=C4) C=C3) =C (C5=CC=C (C6=CC=CC=C6) C=C5) /C7=CC=C (C8=CC=C (C (O) =O) C=C8) C=C7) =O