Using O=C(NCO)C(F)(F)F, O=C(O)c1c(Cl)cccc1Cl to produce O=C(O)c1c(Cl)ccc(CNC(=O)C(F)(F)F)c1Cl, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.