1 H 　 NMR ( DMSO - d 6 , 400 MHz ) δ 9 . 70 ( s , 1 H ) , 9 . 01 ( s , 1 H ) , 7 . 63 ( s , 1 H ) , 6 . 83 ( s , 1 H ) , 6 . 73 ( s , 1 H ) , 4 . 47 - 4 . 29 ( m , 1 H ) , 4 . 13 ( m , 1 H ) , 3 . 91 ( s , 3 H ) , 3 . 80 ( s , 3 H ) , 3 . 38 ( m , 2 H ) , 2 . 36 - 2 . 11 ( m , 1 H ) , 2 . 11 - 1 . 84 ( m , 1 H ) , 1 . 77 - 1 . 53 ( m , 4 H ) ( 화합물 3 ) ;