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organic compounds
In the title compound, C19H15NO2S, the benz[f]indole ring system is essentially planar, with maximum and mean deviations for 13 ring atoms of 0.051 (2) and 0.023 (4) Å. The N atom lies 0.199 (1) Å out of the plane of the three atoms bonded to it. The phenyl group forms a dihedral angle of 82.83 (5)° with the benz[f]indole plane. The S-N distance is 1.646 (1) Å and the S=O distances average 1.426 (1) Å.