1 H NMR ( 400 MHz , 클로로포름 - d ) δ 8 . 27 ( dd , J = 2 . 4 , 0 . 7 Hz , 1 H ) , 7 . 62 ( dd , J = 8 . 9 , 2 . 4 Hz , 1 H ) , 6 . 35 ( dd , J = 9 . 0 , 0 . 7 Hz , 1 H ) , 4 . 63 ( s , 1 H ) , 3 . 90 - 3 . 63 ( m , 4 H ) , 3 . 56 ( d , J = 5 . 1 Hz , 1 H ) , 3 . 35 ( s , 1 H ) , 3 . 06 ( dt , J = 11 . 8 , 3 . 0 Hz , 2 H ) , 2 . 87 ( t , J = 13 . 5 Hz , 1 H ) , 2 . 66 ( d , J = 14 . 0 Hz , 1 H ) , 1 . 88 ( dt , J = 9 . 9 , 4 . 9 Hz , 2 H ) , 1 . 76 - 1 . 63 ( m , 2 H ) , 1 . 57 ( s , 3 H ) .