Acta Cryst. (2012). E68, o118 [ doi:10.1107/S1600536811052883 ]
Abstract: In the title compound, C25H26N4O3, the two fused pyrrolo[3,2-d]pyrimidine rings form a dihedral angle of 3.7 (2)°. The two substituent phenyl rings are twisted with respect to the pyrrole and pyrimidine rings, making dihedral angles of 57.2 (2) and 69.0 (2)°, respectively. The ethyl and ethoxy groups are disordered over two positions; the site occupancies are 0.53 (1) and 0.47 (1) for ethyl, and 0.63 (1) and 0.37 (1) for ethoxy. The crystal packing features C-HO hydrogen bonds.
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