Crystal structure of (E)-2-(furan-2-yl­methyl­idene)-2,3,4,9-tetra­hydro-1H-carbazol-1-one

The title compound, C17H13NO2, crystallizes with two conformationally very similar independent mol­ecules (A and B) in the asymmetric unit. In the crystal, the individual mol­ecules are linked by pairs of N—H⋯O hydrogen bonds forming A–A and B–B inversion dimers, with R22(10) rings. They stack alternately up the a-axis direction and are linked by C—H⋯π inter­actions, forming sheets parallel to the ab plane.