Using OCCN1CCOCC1, COc1cccc(Nc2ncnc3cc(-c4ccc(Br)cc4)sc23)c1 to produce COc1cccc(Nc2ncnc3cc(-c4ccc(OCCN5CCOCC5)cc4)sc23)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.