Using O=C1NC(=O)c2ccccc21, CCOC(=O)c1onc(OCC)c1CBr to produce CCOC(=O)c1onc(OCC)c1CN1C(=O)c2ccccc2C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.