Using FC(F)(F)c1ccc2c(c1)CNCC2, O=CCN1CCC(c2ccccc2)(c2ccccc2)C1=O to produce O=C1N(CCN2CCc3ccc(C(F)(F)F)cc3C2)CCC1(c1ccccc1)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.