1 H NMR ( 400 MHz , 클로로포름 - d ) δ 8 . 22 ( s , 1 H ) , 6 . 33 ( s , 1 H ) , 5 . 30 ( s , 0 H ) , 4 . 72 ( t , J = 6 . 3 Hz , 2 H ) , 4 . 59 ( t , J = 5 . 8 Hz , 2 H ) , 3 . 85 ( dd , J = 11 . 8 , 2 . 4 Hz , 2 H ) , 3 . 70 ( p , J = 6 . 0 Hz , 1 H ) , 3 . 24 ( s , 0 H ) , 3 . 23 ( s , 1 H ) , 3 . 22 - 3 . 09 ( m , 4 H ) , 2 . 34 ( d , J = 0 . 7 Hz , 3 H ) , 1 . 85 ( dd , J = 8 . 9 , 4 . 3 Hz , 2 H ) , 1 . 72 - 1 . 66 ( m , 2 H ) .