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, C25H30N2O6, has the imidazolidine ring in an envelope conformation. There are two intramolecular O-H center dot center dot center dot 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)degrees with the plane of the benzene ring, while the other methyl carboxylate group is almost coplanar, making a dihedral angle of 2.26 (9)degrees. In the crystal, pairs of intermolecular C-H center dot center dot center dot O hydrogen bonds form racemic dimers, corresponding to an R-2(2)(18) graph-set motif. Further weak C-H center dot center dot center dot O interactions generate a chain running along the c axis.