1 H NMR ( 400 MHz , DMSO - d 6 ) : δ [ ppm ] = 3 . 19 - 3 . 43 ( m , 3 H 및 물 신호 ) , 3 . 55 - 3 . 64 ( m , 2 H ) , 4 . 69 ( br s , 1 H ) , 5 . 00 ( br s , 1 H ) , 7 . 57 - 7 . 62 ( m , 2 H ) , 8 . 01 - 8 . 06 ( m , 2 H ) , 8 . 25 ( ddd , 1 H ) , 8 . 68 ( s , 1 H ) , 8 . 76 ( d , 1 H ) , 8 . 86 ( t , 1 H ) , 9 . 44 ( t , 1 H ) .