4-Carboxyphenylboronic acid pinacol ester4-Carboxybenzeneboronic acid, pinacol ester4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)benzoic acid4-Carboxybenzeneboronic acid pinacol ester4-羧基苯硼酸频哪酯4-Carboxylphenylboronic acid pinacol ester4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)benzoic acid4-羧基苯硼酸频哪醇酯4-(4,4,5,5-四甲基-1,3,2-二氧杂硼烷-2-基)苯甲酸4-Carboxylphenylboronic acid pinacol ester