Using CC=Cc1nc2ccc(C)cc2c(=O)[nH]1, O=C1CCC(=O)N1Br to produce Cc1ccc2nc(C=CCBr)[nH]c(=O)c2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.