Abstract

In the title compound, C20H17NO3 (alternative name: N-hy­droxy-9,10-dimethyl-9,10-ethano­anthracene-11,12-dicarboximide), the rigid ethano­anthracene-dicarboximide moiety has a roof-shaped geometry, the inter­planar angle between the two terminal phenyl rings being 124.9 (6)°. In the crystal, mol­ecules are linked via O—H⋯O hydrogen bonds, forming chains along [010]. C—H⋯O and C—H⋯π inter­actions link adjacent chains, leading to the formation of a three-dimensional structure.

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