Using O=C(Cc1ccc(F)cc1)N1CC(N2CCOCC2)CN1C(=O)OCc1ccccc1 to produce O=C(Cc1ccc(F)cc1)N1CC(N2CCOCC2)CN1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.