Using O=C(F)c1ccccc1, CNC(CN1CC(O)C1)C(F)(F)F to produce CNC(CN1CC(OC(=O)c2ccccc2)C1)C(F)(F)F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.