1,7:6,9-dianhydro-3,5-dibromo-9-(3-bromopropa-1,2-dien-1-yl)-1-(1-bromopropyl)-2,3,5,8-tetradeoxynonitol InChI=1/C15H20Br4O3/c1-2-9(17)11-7-10(18)14(20)13(19)15-12(22-11)6-8(21-15)4-3-5-16/h4-5,8-15,20H,2,6-7H2,1H nonitol, 1,7:6,9-dianhydro-3,5-dibromo-9-C-(3-bromo-1,2-propadienyl)-1-C-(1-bromopropyl)-2,3,5,8-tetradeoxy-