1 H NMR ( 700 . 03 MHz , DMSO - d 6 ) δ 3 . 16 ( 4 H , t ) , 3 . 72 ( 4 H , t ) , 7 . 49 ( 1 H , d ) , 7 . 81 - 7 . 83 ( 1 H , m ) , 7 . 84 - 7 . 86 ( 1 H , m ) , 8 . 16 ( 1 H , d ) , 8 . 19 ( 1 H , d ) , 8 . 21 ( 1 H , d ) , 8 . 39 ( 1 H , d ) , 8 . 52 ( 1 H , d ) ; m / z = 543 비 할당 ( Br ) .