IUCrData, vol.10, no.Pt 5, 2025 (Scopus)
In the title compound, C21H14BrN3O3, the indoline ring system is almost planar, while the pyran ring is in flattened-boat conformation. In the crystal, N - H⋯O and N - H⋯N hydrogen bonds link the mol[ecules, enclosing R22(8) and R22(12) ring motifs, into (001) sheets.