Using O=C1CCC(=O)N1Br, CC(C)(C)OC(=O)c1ccc(-c2cccnc2N)cc1F to produce CC(C)(C)OC(=O)c1ccc(-c2cc(Br)cnc2N)cc1F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.