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The title molecule, C20H20N2, is chiral; the absolute configuration follows from the known chirality of the input reagents. In addition to van der Waals forces, C—H...π ring interactions are also present. The angle between the planes of the phenyl rings is 65.6 (1)°. The heterocyclic ring of the quinoxaline system has a twist-boat configuration, while the cyclohexane ring has a chair configuration.