Using CCOc1cc(C2CCN(CCS(C)(=O)=O)CC2)ccc1NC(=O)C(F)(F)F to produce CCOc1cc(C2CCN(CCS(C)(=O)=O)CC2)ccc1N, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.