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The title achiral compound, C 13 H 18 N 2 O, crystallized in the chiral monoclinic space group  P 2 1 . The pyrrole rings are inclined to one another by 62.30 (11)°, and the propanol chain is in an extended conformation. In the crystal, the two pyrrole NH groups are involved in inter­molecular N—H⋯O hydrogen bonds, leading to the formation of a helical arrangement propagating along the  b  axis. An inter­esting feature of the crystal structure is the absence of any conventional hydrogen bonds involving the hydr­oxy H atom. There is, however, a weak inter­molecular O—H⋯π inter­action involving one of the pyrrole rings.

4,4-Bis(1H-pyrrol-2-yl)pentanol