Using CCOC(=O)c1c(S)[nH]c2cc(Cl)c(F)cc2c1=O, BrCCBr to produce CCOC(=O)c1c2n(c3cc(Cl)c(F)cc3c1=O)CCS2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.