1 H NMR ( 400 MHz , DMSO - d 6 ) : δ [ ppm ] = 1 . 75 - 1 . 86 ( m , 2 H ) , 2 . 36 - 2 . 46 ( m , 2 H ) , 2 . 46 - 2 . 58 ( m , 2 H 및 DMSO 신호 ) , 3 . 49 ( ddd , 1 H ) , 3 . 77 ( ddd , 1 H ) , 4 . 19 - 4 . 24 ( m , 1 H ) , 4 . 91 - 5 . 01 ( m , 1 H ) , 6 . 69 ( s , 1 H ) , 7 . 58 - 7 . 63 ( m , 2 H ) , 8 . 08 - 8 . 13 ( m , 2 H ) , 8 . 18 ( s , 1 H ) , 8 . 59 ( s , 1 H ) , 8 . 61 ( s , 1 H ) , 9 . 73 ( t , 1 H ) .