title: 17-(Pyrimidin-2-yl)-8,16-dioxa-17-aza-tetra-cyclo-[7.7.1.0.0]hepta-deca-2,4,6,10,12,14-hexa-ene.
abstract: In the title compound, C(18)H(13)N(3)O(2), the benzene rings form a dihedral angle of 78.49 (9)°. The dihedral angles between the benzene rings and the pyrimidine ring are 76.53 (10) and 27.73 (11)°. The two cis-fused six-membered heterocyclic rings adopt half-chair confirmations. In the crystal, mol-ecules are linked by C-H⋯O hydrogen bonds, forming chains parallel to the b axis.
authors.forename: M
authors.initials: M
authors.lastname: Aslam
authors.forename: I
authors.initials: I
authors.lastname: Anis
authors.forename: N
authors.initials: N
authors.lastname: Afza
authors.forename: M
authors.initials: M
authors.lastname: Ibrahim
authors.forename: S
authors.initials: S
authors.lastname: Yousuf