Experimental

R factor = 0.046; wR factor = 0.103; data-to-parameter ratio = 15.4. In the title compound, C20H18N4O3, the dihedral angles between the central benzene ring and the 1H-1,2,3-triazole ring and the fused benzene ring are 65.34 (19) and 3.64 (18), respectively. The dioxole ring adopts a shallow envelope conformation, with the methylene C atom displaced by 0.156 (5) A ̊ from the other four atoms (r.m.s. deviation = 0.007Å). In the crystal, the molecules are linked by C—H O and C—H N hydrogen bonds, generating a three-dimen-sional network. Related literature For background to Schiff base compounds, see: Arora et al