Using OB(O)c1ccccc1-c1cc(Cl)ccc1OCc1ccccc1, CCOC(=O)c1cccc(Br)n1 to produce CCOC(=O)c1cccc(-c2ccccc2-c2cc(Cl)ccc2OCc2ccccc2)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.