(2E)-4-(4-bromophenyl)-4-oxobut-2-enoic acid 2-butenoic acid, 4-(4-bromophenyl)-4-oxo-, (2E)- InChI=1/C10H7BrO3/c11-8-3-1-7(2-4-8)9(12)5-6-10(13)14/h1-6H,(H,13,14)/b6-5