Azilsartan Impurity 9

(5-methyl-2-oxo-1,3-dioxol-4-yl)methyl 2-ethoxy-1-((3'-(4-((5-methyl-2-oxo-1,3-dioxol-4-yl)methyl)-5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)-[1,1'-biphenyl]-4-yl)methyl)-1H-benzo[d]imidazole-7-carboxylate.