Using CCCO, O=C1c2cccc(Cl)c2C(Br)c2cccc(Cl)c21 to produce CCCOC1c2cccc(Cl)c2C(=O)c2cccc(Cl)c21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.