Using Cc1ccc(Br)cc1, O=C1c2ccccc2C(=O)c2ccccc21 to produce Cc1ccc(C2(O)c3ccccc3C(=O)c3ccccc32)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.