1 H NMR ( 400 MHz , 클로로포름 - d ) δ 8 . 27 ( dd , J = 2 . 4 , 0 . 7 Hz , 1 H ) , 7 . 61 ( dd , J = 9 . 0 , 2 . 4 Hz , 1 H ) , 6 . 51 - 6 . 27 ( m , 1 H ) , 4 . 37 - 4 . 07 ( m , 4 H ) , 3 . 84 ( s , 2 H ) , 3 . 79 - 3 . 72 ( m , 2 H ) , 3 . 29 - 3 . 07 ( m , 2 H ) , 1 . 77 - 1 . 63 ( m , 4 H ) , 1 . 62 ( s , 3 H ) , 1 . 27 ( t , J = 7 . 2 Hz , 6 H ) .