Using Nc1ccc(C(O)c2cn(S(=O)(=O)c3ccccc3)c3ncc(Cl)cc23)cn1 to produce Nc1ccc(Cc2cn(S(=O)(=O)c3ccccc3)c3ncc(Cl)cc23)cn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.