1 H NMR ( 400 MHz , CDCl 3 ) δ 9 . 30 ( br s , 1 H ) , 7 . 12 ( d , J = 8 . 4 Hz , 1 H ) , 6 . 96 - 6 . 93 ( m , 2 H ) , 5 . 76 및 5 . 71 ( AB q , J = 6 . 8 Hz , 2 H ) , 4 . 88 - 4 . 81 ( m , 1 H ) , 3 . 62 ( m , 1 H ) , 3 . 17 - 3 . 06 ( m , 3 H ) , 2 . 85 - 2 . 72 ( m , 2 H ) , 2 . 35 ( d , J = 13 . 6 Hz , 1 H ) , 2 . 08 ( d , J = 12 . 0 Hz , 1 H ) , 2 . 01 - 1 . 88 ( m , 3 H ) , 1 . 77 - 1 . 65 ( m , 5 H ) , 1 . 58 - 1 . 36 ( m , 10 H ) , 1 . 35 - 1 . 21 ( m , 1 H ) , 1 . 07 - 1 . 03 ( m , 1 H ) .