Using NCCc1ccc2c(c1)OC(F)(F)O2, COc1nc(Cl)cc(Cl)n1 to produce COc1nc(Cl)cc(NCCc2ccc3c(c2)OC(F)(F)O3)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.