Using CCc1ccc2c(c1)C(=O)c1ccccc1C2=O, O=C1CCC(=O)N1Br to produce CC(Br)c1ccc2c(c1)C(=O)c1ccccc1C2=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.