6,6′-Dimethyl-2,2′-[imidazolidine-1,3-diyl­bis(methyl­ene)]diphenol

In the title compound, C₁₉H₂₄N₂O₂, a di-Mannich base derived from 2-methyl­phenol and 1,3,6,8-tetra­aza­tri­cyclo­[4.4.1.1^3,8]dodecane, the imidazolidine ring adopts a twist conformation, with a twist about the ring N—C bond [C—N—C—C torsion angle = −44.34 (14)°]. The two 2-hy­droxy-3-methyl­benzyl groups are located in trans positions with respect to the imidazolidine fragment. The structure displays two intra­molecular O—H...N hydrogen bonds, which each form an S(6) ring motif. In the crystal, the mol­ecules are linked by weak C—H...O inter­actions with a bifurcated acceptor, forming a three-dimensional network.