1 H NMR ( CDCl 3 ) δ = 1 . 49 ~ 1 . 57 ( 1 H , m ) 1 . 76 ~ 1 . 89 ( 2 H , m ) , 1 . 89 ~ 2 . 06 ( 1 H , m ) , 2 . 06 ~ 2 . 18 ( 3 H , m ) , 2 . 58 ~ 2 . 73 ( 4 H , m ) , 3 . 28 ( 1 H , dd , J = 7 . 6 Hz , J = 17 . 2 Hz ) , 3 . 42 ~ 3 . 51 ( 2 H , m ) , 3 . 89 ( 3 H , s ) , 3 . 95 ( 3 H , s ) , 4 . 17 ~ 4 . 19 ( 2 H , m ) , 6 . 84 ( 1 H , s ) , 7 . 11 ( 1 H , s ) , 7 . 45 ( 3 H , m ) , 7 . 63 ( 2 H , br - s ) , 12 . 4 ( 1 H , m )