Dimethyl 4,4′-dihy­droxy-3,3′-{[(3aRS,7aRS)-2,3,3a,4,5,6,7,7a-octa­hydro-1H-1,3-benzimidazole-1,3-di­yl]bis­(methyl­ene)}dibenzoate

The title compound, C(25)H(30)N(2)O(6), has the imidazolidine ring in an envelope conformation. There are two intra­molecular O—H⋯N hydrogen-bond inter­actions with graph-set motif S(6). The cyclo­hexane ring adopts a slightly distorted chair conformation. One methyl carboxyl­ate substituent forms a dihedral angle of 12.00 (5)° with the plane of the benzene ring, while the other methyl carboxyl­ate group is almost coplanar, making a dihedral angle of 2.26 (9)°. In the crystal, pairs of inter­molecular C—H⋯O hydrogen bonds form racemic dimers, corresponding to an R (2) (2)(18) graph-set motif. Further weak C—H⋯O inter­actions generate a chain running along the c axis.