Using CCC(=O)CBr, Nc1ccc(N2CCN(C(=O)c3ccccc3C(F)(F)F)CC2)nn1 to produce CCc1cn2nc(N3CCN(C(=O)c4ccccc4C(F)(F)F)CC3)ccc2n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.