1 H NMR ( 399 . 9 MHz , CDCl 3 ) δ 1 . 39 ( 3 H , d ) , 2 . 48 - 2 . 53 ( 2 H , m ) , 2 . 62 - 2 . 68 ( 2 H , m ) , 3 . 49 ( 1 H , q ) , 3 . 54 - 3 . 64 ( 4 H , m ) , 7 . 00 ( 1 H , d ) , 7 . 12 ( 1 H , t ) , 7 . 47 - 7 . 49 ( 2 H , m ) , 7 . 62 - 7 . 65 ( 2 H , m ) , 7 . 89 ( 1 H , d ) ; m / z = 384 [ M + H ] +.