10-Benzyl-3,3,6,6,9-penta­methyl-3,4,6,7,9,10-hexa­hydro­acridine-1,8(2H,5H)-dione

The title compound, C₂₅H₃₁NO₂, crystallizes with two molecules in the asymmetric unit. In both mol­ecules, the central dihydropyridine ring adopts a flattened boat conformation. In mol­ecule A, the outer rings adopt sofa conformations, whereas in mol­ecule B, one of the outer rings is disordered and the other ring adopts a sofa conformation. In the crystal structure, C—H...O inter­actions link the mol­ecules to form a tape that runs along the b axis.