Using O=C(c1ccc(Cl)cc1Cl)C1Oc2cc(Br)ccc2C1=O, COS(=O)(=O)OC to produce COc1c(C(=O)c2ccc(Cl)cc2Cl)oc2cc(Br)ccc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.