Using COc1cc(CCN2CCNCC2C(F)(F)F)ccc1C#N, O=CCc1ccc2c(c1)COC2=O to produce COc1cc(CCN2CCN(CCc3ccc4c(c3)COC4=O)CC2C(F)(F)F)ccc1C#N, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.