Using Fc1ccc(CBr)cc1, CCCc1nc2cnc3cc(O)ccc3c2s1 to produce CCCc1nc2cnc3cc(OCc4ccc(F)cc4)ccc3c2s1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.