Using O=C1NC(=O)c2ccccc21, Cc1c(CBr)cccc1C(F)(F)C(F)(F)c1ccccc1 to produce Cc1c(CN2C(=O)c3ccccc3C2=O)cccc1C(F)(F)C(F)(F)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.