Using COC(=O)Cn1ccc2ccc(S(=O)(=O)N3CCN(c4ccc(OC(F)(F)F)cc4)CC3)cc21 to produce COC(=O)CN1CCc2ccc(S(=O)(=O)N3CCN(c4ccc(OC(F)(F)F)cc4)CC3)cc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.