InChI=1S/C19H10Br4O2.CH4O3S.Na/c20-13-6-11(7-14(21)18(13)24)17(10-4-2-1-3-5-10)12-8-15(22)19(25)16(23)9-12;1-5(2,3)4;/h1-9,24H;1H3,(H,2,3,4);/q;;+1/p-1