Using CCOC(=O)Cc1ncnc2ccccc12, CCOC(=O)C(=O)CBr to produce CCOC(=O)c1cn2cnc3ccccc3c2c1C(=O)OCC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.