Using Cc1oc(-c2ccc(F)cc2)nc1CCOS(C)(=O)=O, CCOC(=O)CCc1ccc(O)cc1CC to produce CCOC(=O)CCc1ccc(OCCc2nc(-c3ccc(F)cc3)oc2C)cc1CC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.