2,1,3-Benzoxadiazole-5-boronic acid, pinacol esterBenzofurazan-5-boronic acid, pinacol ester苯呋咱-5-硼酸频哪酯Benzofurazan-5-boronic acid pinacol ester5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)furazanBenzo[c][1,2,5]oxadiazole-5-boronic acid pinacol ester苯并[c][1,2,5]噁二唑-5-硼酸频哪醇酯5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)benzo[c][1,2,5]oxadiazole