1 H NMR ( 399 . 9 MHz , CDCl 3 ) δ 1 . 25 - 1 . 33 ( 2 H , m ) , 1 . 46 - 1 . 55 ( 2 H , m ) , 1 . 78 - 1 . 87 ( 5 H , m ) , 2 . 93 - 3 . 00 ( 2 H , m ) , 3 . 27 - 3 . 28 ( 2 H , m ) , 3 . 34 - 3 . 42 ( 3 H , m ) , 3 . 83 - 3 . 88 ( 2 H , m ) , 4 . 16 - 4 . 20 ( 2 H , m ) , 7 . 01 ( 1 H , d ) , 7 . 83 ( 1 H , d ) ; m / z = 386 [ M + H ] +.