2-(Piperazin-1-yl)pyridine-5-boronic acid, pinacol ester6-(1-Piperazinyl)pyridine-3-boronic acid pinacol ester6-(1-哌嗪基)吡啶-3-硼酸频哪醇酯1-(5-(4,4,5,5-四甲基-1,3,2-二氧硼戊环-2-基)哌啶-2-基]哌嗪1-(5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)piperazine1-(5-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)PYRIDIN-2-YL)PIPERAZINE