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 methyl-ene C atom displaced by 0.156 (5) Å from the other four atoms (r.m.s. deviation = 0.007Å). In the crystal, the mol-ecules are linked by C-H⋯O and C-H⋯N hydrogen bonds, generating a three-dimensional network.