In the crystal structure of the title compound, C(22)H(19)N(3)O(3), inter-molecular C-H⋯O hydrogen bonds link the mol-ecules into a zigzag chain parallel to the face diagonal of the ac plane. The meth-oxy phenyl rings make a dihdral angle of 32.38 (7)° and form dihedral angles of 0.66 (8) and 24.17 (7)° with the fused benzooxazine ring system.