Using O=C(NNc1nc(-c2ccccc2)c2cc(Cl)ccc2n1)C(F)(F)F to produce FC(F)(F)c1nnc2nc(-c3ccccc3)c3cc(Cl)ccc3n12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.