Using CC(C)(C)OC(=O)N1CCN(C(=O)c2cccc(C(F)(F)F)c2F)CC1 to produce O=C(c1cccc(C(F)(F)F)c1F)N1CCNCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.