2H-1,5-benzodioxepin, 3-bromo-3,4-dihydro- 3-bromo-3,4-dihydro-2H-1,5-benzodioxepine InChI=1/C9H9BrO2/c10-7-5-11-8-3-1-2-4-9(8)12-6-7/h1-4,7H,5-6H