Using O=C1CCC(=O)N1Br, Fc1ccc(-c2cc3cccc(Cl)n3n2)cc1 to produce Fc1ccc(-c2nn3c(Cl)cccc3c2Br)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.