Using O=C1OCc2cc(CCN3CCNCC3C(F)(F)F)ccc21, COc1cc(CC=O)ccc1C#N to produce COc1cc(CCN2CCN(CCc3ccc4c(c3)COC4=O)C(C(F)(F)F)C2)ccc1C#N, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.