Using CCOC(=O)c1cnc2ccc(Br)cc2c1N[C@@H]1CCOC1 to produce O=C(O)c1cnc2ccc(Br)cc2c1N[C@@H]1CCOC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.