Azilsartan Impurity 20

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