1 H NMR ( 400 MHz , CDCl 3 ) δ 7 . 42 - 7 . 20 ( m , 10 H ) , 6 . 94 ( d , J = 8 . 0 Hz , 1 H ) , 6 . 87 ( dd , J = 6 . 8 , 2 . 4 Hz , 1 H ) , 6 . 71 - 6 . 68 ( m , 1 H ) , 5 . 74 및 5 . 67 ( AB q , J = 6 . 8 Hz , 2 H ) , 5 . 13 ( br , 2 H ) , 4 . 41 ( br , 1 H ) , 3 . 86 ( br , 1 H ) , 3 . 48 ( t , J = 7 . 6 Hz , 1 H ) , 3 . 07 ( br d , J = 14 . 4 Hz , 1 H ) , 2 . 68 - 2 . 64 ( m , 2 H ) , 2 . 28 - 2 . 22 ( m , 1 H ) , 2 . 15 - 2 . 04 ( m , 1 H ) , 1 . 84 - 1 . 77 ( m , 1 H ) , 1 . 69 - 1 . 20 ( m , 8 H ) , 1 . 00 - 0 . 97 ( m , 1 H ) , 0 . 91 - 0 . 84 ( m , 4 H ) .