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In the title compound, C15H10Cl2N2O, the dihedral angle between the mean planes of the phenyl ring and the 10-membered quinazoline ring is 63.3 (4)°. In the crystal, pairs of weak C—H...O inter­actions link the mol­ecules into centrosymmetric dimers, forming R22(10) graph-set ring motifs. In addition, weak π–π stacking inter­actions [minimum centroid–centroid separation = 3.6810 (8) Å] are observed, which contribute to the formation of a supramolecular assembly in the packing array.
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