[1,2,5]Oxadiazolo[3,4-b]pyridine-6-boronic acid, pinacol ester6-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-[1,2,5]oxadiazolo[3,4-b]pyridine[1,2,5]噁二唑并[3,4-b]吡啶-6-基硼酸频哪醇酯[1,2,5]Oxadiazolo[3,4-b]pyridin-6-ylboronic acid pinacol ester6-(4,4,5,5-四甲基-1,3,2-二氧杂硼烷-2-基)-[1,2,5]噁二唑并[3,4-b]吡啶