Using Cc1onc(C(=O)c2c(F)cccc2F)c1N, O=C(Br)CBr to produce Cc1onc(C(=O)c2c(F)cccc2F)c1NC(=O)CBr, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.