1 H NMR ( CDCl 3 ) , δ ( ppm ) : 7 . 19 ( s , 1 H ) , 7 . 00 ( s , 1 H ) , 2 . 62 ( d , 2 H ) , 1 . 65 ( m , 1 H ) , 1 . 20 ? ? 1 . 40 ( m , 32 H ) , 0 . 85 ? ? 0 . 98 ( m , 6 H ) , 0 . 20 - 0 . 58 ( m , 9 H ) .