Using Nc1nc(Cl)cc(Cl)n1, O=C(NCc1ccc(CO)cc1)C(F)(F)F to produce Nc1nc(Cl)cc(OCc2ccc(CNC(=O)C(F)(F)F)cc2)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.