Using NC1CC1, O=C(O)c1ccc2cc(C(=O)NC(c3cccc(C(F)(F)F)c3)C(F)(F)F)oc2c1 to produce O=C(NC1CC1)c1ccc2cc(C(=O)NC(c3cccc(C(F)(F)F)c3)C(F)(F)F)oc2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.