Using Cc1ccccc1C(=O)CBr, O=C1Nc2cccnc2Nc2ccccc21 to produce Cc1ccccc1C(=O)CN1C(=O)c2ccccc2Nc2ncccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.