- 1 H NMR ( CDCl 3 , 500 MHz ) : δ 8 . 05 - 7 . 87 ( m , 28 H ) , 6 . 25 - 5 . 43 ( m , 8 H ) , 1 . 62 ( m , 16 H ) , 1 . 49 ( s , 12 H ) , 1 . 43 ( s , 12 H ) , 1 . 3 ( m , 10 H ) , 0 . 97 ( m , 12 H ) , 0 . 86 ( m , 12 H )