Using CCOC(=O)CC(=O)C(F)(F)F, Nc1cc(C2CCN(c3ccc(Cl)cn3)CC2)n[nH]1 to produce O=C1CC(O)(C(F)(F)F)c2c(C3CCN(c4ccc(Cl)cn4)CC3)n[nH]c2N1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.