Schizandrol A: a lignan from Schisandra chinensis

The title compound (systematic name: 1,2,3,10,11,12-hexa­meth­oxy-6,7-dimethyl-5,6,7,8-tetra­hydro­dibenzo[a,c]cyclo­oc­ten-6-ol), C(24)H(32)O(7), has a dibenzocyclo­octa­diene skeleton. There are three mol­ecules in the asymmetric unit, which are related by a pseudo-translation in the direction of the c axis. Nevertheless, the three mol­ecules differ in the torsion angle of one of the meth­oxy groups. The dihedral angles between the two aromatic rings are 62.39 (10), 62.65 (10) and 61.84 (10)° for the three mol­ecules. The crystal packing is stabilized by a series of O—H⋯O and C—H⋯O hydrogen bonds, as well as C—H⋯π inter­actions.