1 H NMR ( 400 MHz , DMSO - d 6 ) : δ [ ppm ] = 3 . 21 - 3 . 30 ( m , 1 H ) , 3 . 30 - 3 . 36 ( m , 1 H 및 물 신호 ) , 3 . 38 - 3 . 44 ( m , 1 H ) , 3 . 58 - 3 . 67 ( m , 2 H ) , 3 . 93 ( s , 3 H ) , 4 . 70 ( t , 1 H ) , 5 . 03 ( d , 1 H ) , 7 . 58 - 7 . 62 ( m , 2 H ) , 8 . 08 - 8 . 13 ( m , 3 H ) , 8 . 55 ( s , 1 H ) , 8 . 59 ( s , 1 H ) , 9 . 63 ( t , 1 H ) .