This is a structure in a family concerning new polythiophene derivatives. This kind of compounds, a chalcones, has interesting aspects about its intermolecular interactions, of varied type (C-H center dot center dot center dot O, C-H center dot center dot center dot pi, pi center dot center dot center dot pi) and strength. In the case of the title compound, C15H14OS2, interactions of all three types generate a rather compact, evenly connected 3D structure.