1,5-Bis[(2-meth­oxy­eth­oxy)meth­yl]-1,5-naphthyridine-4,8(1H,5H)-dione

The complete mol­ecule of the title compound, C16H22N2O6, is generated by crystallographic inversion symmetry. The conformation of the N—C—O—C fragment of the side chain is approximately gauche [torsion angle = −74.84 (17)°]. In the crystal, weak C—H⋯O inter­actions link the mol­ecules.