InChI=1/C27H18Br2OS/c28-22-15-20(16-23(29)27(22)30)18-10-12-19(13-11-18)26-21-8-4-5-9-24(21)31-25(26)14-17-6-2-1-3-7-17/h1-13,15-16,30H,14H2 3DA4BC3DA2FCDC0D