Using BrCc1ccccc1, O=C(O)C1C=COc2cc(Cl)c(Cl)cc21 to produce O=C(OCc1ccccc1)C1C=COc2cc(Cl)c(Cl)cc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.