2-(3,4-Dihydro-2H-benzo[b][1,4]dioxepin-7-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 250mg

2-(3,4-Dihydro-2H-benzo[b][1,4]dioxepin-7-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 250mg