The title compound, C20H24N6O2S2·2C2H6OS, has crystallographically imposed centrosymmetry. The packing is assisted by N—H...O, C—H...O and N—H...S interactions with the lattice solvent molecules, forming a two-dimensional network parallel to (1-10). The lattice dimethyl sulfoxide molecules (except for the S atoms) were modelled over two sites with refined occupancies of 0.831 (3):0.169 (3).
