Using CI, O=C1NCc2cccnc2N1c1cccc(C(F)(F)F)c1 to produce CN1Cc2cccnc2N(c2cccc(C(F)(F)F)c2)C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.