The novel nitrogen-containing heterocyclic compound, and an organic light emitting element includin

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PROBLEM TO BE SOLVED : To provide a nitrogen-containing heterocyclic compound having excellent π-conjugated property, solubility, film-forming property, and stability.SOLUTION : Provided is a nitrogen-containing heterocyclic compound represented by a formula (1), which is useful as a material for solar cells and the like. [R, R, R, R, R, R, R, and Rare each independently H, F, Br, and Cl; Rto Rare each independently are H, F, Cl, an alkyl group, an aryl group, an amino group, and the like; and a to d are an integer of 0 or 1, where 2≤a+b+c+d≤4.]SELECTED DRAWING : None