4,4,5,5-Tetramethyl-2-(pyrazol-4-yl)-1,3,2-dioxaborolane4,4,5,5-四甲基-2-(1H-吡唑-4-基)-1,3,2-二氧杂戊硼烷4-Pyrazoleboronic acid pinacol ester4,4,5,5-Tetramethyl-2-(1H-pyrazol-2-yl)-1,3,2-dioxaborolane4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazolePyrazol-4-ylboronic acid pinacol ester4-吡唑硼酸频哪醇酯4,4,5,5-Tetramethyl-2-(1H-pyrazol-4-yl)-1,3,2-dioxaborolane