1 H NMR ( 700 . 03 MHz , DMSO - d 6 ) δ 2 . 32 ( 3 H , s ) , 3 . 00 ( 4 H , t ) , 3 . 77 ( 4 H , t ) , 6 . 99 - 7 . 01 ( 1 H , m ) , 7 . 06 ( 1 H , d ) , 7 . 16 - 7 . 18 ( 1 H , m ) , 7 . 20 ( 1 H , d ) , 7 . 66 ( 1 H , d ) , 8 . 28 ( 1 H , d ) ; m / z = 363 [ M + H ] +.