1 H NMR ( 400 MHz , CDCl 3 ) δ 7 . 33 ( br , 5 H ) , 7 . 02 ( d , J = 6 . 8 Hz , 1 H ) , 6 . 94 ( d , J = 2 . 4 Hz , 1 H ) , 6 . 83 ( dd , J = 8 . 4 , 2 . 4 Hz , 1 H ) , 5 . 75 및 5 . 73 ( Ab q , J = 6 . 4 Hz , 2 H ) , 5 . 12 ( br , 2 H ) , 4 . 36 ( br d , J = 40 . 4 Hz , 1 H ) , 3 . 87 ( br , 1 H ) , 3 . 11 - 3 . 07 ( m , 1 H ) , 2 . 71 - 2 . 65 ( m , 2 H ) , 2 . 37 - 2 . 31 ( m , 3 H ) , 1 . 77 - 1 . 22 ( m , 13 H ) , 1 . 08 - 1 . 02 ( m , 1 H ) , 0 . 88 ( t , J = 7 . 6 Hz , 3 H ) .