Diethyl 2,2-bis­(3,5-di-tert-butyl-4-hy­droxy­benz­yl)malonate

The title mol­ecule, C₃₇H₅₆O₆, possesses twofold symmetry, with the twofold axis passing through the quaternary C atom. In the crystal, neighbouring mol­ecules are linked via O—H...O hydrogen bonds involving the phenol OH group and the carbonyl O atom, forming chains propagating in [101]. Within these chains, rings are formed with an R₂²(20) motif. There are also C—H...O inter­actions present within the rings.