Using Nc1cc(Br)ccc1C=O, CCOC(CN1C(=O)c2ccccc2C1=O)OCC to produce O=C1c2ccccc2C(=O)N1c1cnc2cc(Br)ccc2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.