Using [Cl-], COCOc1ccc(-c2cc(N)nn2-c2ccc(OC)cc2)cc1 to produce COCOc1ccc(-c2cc(Cl)nn2-c2ccc(OC)cc2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.