1 H NMR ( 400 MHz , CD 3 OD ) δ 9 . 12 ( s , 1 H ) , 8 . 83 - 8 . 63 ( v br m , 1 H ) , 8 . 18 ( d , J = 9 . 0 Hz , 1 H ) , 7 . 72 ( dd , J = 9 . 0 , 2 . 0 Hz , 1 H ) , 5 . 37 - 5 . 13 ( v br m , 1 H ) , 4 . 45 - 4 . 31 ( m , 1 H ) , 4 . 06 - 3 . 97 ( m , 1 H ) , 3 . 88 ( ddd , J = 12 . 0 , 12 . 0 , 2 . 5 Hz , 1 H ) , 3 . 21 ( q , J = 7 . 5 Hz , 2 H ) , 2 . 94 - 2 . 44 ( br m , 2 H ) , 2 . 88 ( dd , ABX 패턴 의 절반 , J = 17 . 1 , 4 . 5 Hz , 1 H ) , 2 . 78 ( br dd , ABX 패턴 의 절반 , J = 17 . 1 , 6 . 5 Hz , 1 H ) , 2 . 31 - 2 . 14 ( br m , 1 H ) , 2 . 14 - 1 . 97 ( br m , 1 H ) , 1 . 52 ( t , J = 7 . 3 Hz , 3 H ) .