“…-'H-NMR. : 7,5-7,2 (m, (4,82,75 (4, 73,33 (t), 72,13 (t), 71,58 (t), 55,32 (4, 50,45 (4, 34,83 ( t ) , 20,18 ( (4,81,65 (4,72,27 (I), 71,83 (t), 69,40 ( t ) , 55,76 (d), 46,32 (4, 34,83 (t), 20,02 (qa). -MS.: 368 (I), 367 ( M t , 3), 348 (l), 338 (I), 325 (9).…”