1 H NMR ( 400 MHz , CD 3 OD ) δ 9 . 11 ( s , 1 H ) , 8 . 82 - 8 . 59 ( v br m , 1 H ) , 8 . 17 ( d , J = 9 . 0 Hz , 1 H ) , 7 . 71 ( dd , J = 9 . 0 , 2 . 0 Hz , 1 H ) , 5 . 39 - 5 . 12 ( v br m , 1 H ) , 4 . 44 - 4 . 31 ( m , 1 H ) , 4 . 06 - 3 . 96 ( m , 1 H ) , 3 . 88 ( ddd , J = 12 , 12 , 3 Hz , 1 H ) , 3 . 20 ( q , J = 7 . 5 Hz , 2 H ) , 2 . 88 - 2 . 69 ( br m , 1 H ) , 2 . 88 ( dd , ABX 패턴 의 절반 , J = 17 . 1 , 4 . 0 Hz , 1 H ) , 2 . 78 ( br dd , ABX 패턴 의 절반 , J = 17 . 1 , 6 . 5 Hz , 1 H ) , 2 . 67 - 2 . 46 ( br m , 1 H ) , 2 . 29 - 2 . 14 ( br m , 1 H ) , 2 . 14 - 1 . 97 ( br m , 1 H ) , 1 . 52 ( t , J = 7 . 3 Hz , 3 H ) .