Using O=C(OCc1ccccc1)N1CCN(c2ncccc2NC(=O)C(F)(F)F)CC1 to produce O=C(Nc1cccnc1N1CCNCC1)C(F)(F)F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.