Using CCCC(=O)Nc1n[nH]c2c(F)c(N3CCOCC3)c(N)cc12, Br to produce CCCC(=O)Nc1n[nH]c2c(F)c(N3CCOCC3)c(Br)cc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.