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In the title compound, C18H9Cl3N6O3, all bond lengths and angles are normal. The dihedral angles between the benzene ring and the three pyrazine rings are 72.67 (2), 60.73 (3) and 77.74 (2)°. The crystal packing is stabilized by van der Waals forces and by a weak π–π stacking interaction between pyrazine rings, with a centroid–centroid distance of 3.487 (2) Å.