trans-3-Hydroxy-1-propenylboronic acid pinacol ester

[(1E)-3-Hydroxyprop-1-en-1-yl]boronic acid, pinacol ester

(2E)-3-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)prop-2-en-1-ol, 2-[(1E)-3-Hydroxyprop-1-en-1-yl]-4,4,5,5-tetramethyl-1,3,2-dioxaborolane