Using CC(C)(C)ON, O=C1OC(=O)c2ccc(Br)c3cccc1c23 to produce CC(C)(C)ON1C(=O)c2cccc3c(Br)ccc(c23)C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.