(3-bromophenyl) (1-propenyl) ether (3-bromophenyl) (prop-1-enyl) ether (m-bromophenyl) (1-propenyl) ether InChI=1/C9H9BrO/c1-2-6-11-9-5-3-4-8(10)7-9/h2-7H,1H3/b6-2