Using O=C(O)c1ccc(S(=O)(=O)Nc2ccc(F)cc2C(F)(F)F)cc1, CCOC(=O)CCN to produce CCOC(=O)CCNC(=O)c1ccc(S(=O)(=O)Nc2ccc(F)cc2C(F)(F)F)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.