The final product of the following reaction is:

Step-by-step solution

The first step of the reaction is the nucleophilic aromatic substitution reaction. Generally, aryl halides do not undergo nucleophilic substitution reaction, but here, an electron-withdrawing nitro group is present at the ortho- and the para- position; hence, the nucleophilic displacement becomes quite rapid. Therefore, in this reaction, the displacement of the halide ion by the nucleophile occurs readily in the DMSO solution.