Using O=C(NC1CCc2ccc(C(=O)N3CCC4(CCN(C(=O)C(F)(F)F)CC4)C3)cc21)c1ccccc1Cl to produce O=C(NC1CCc2ccc(C(=O)N3CCC4(CCNCC4)C3)cc21)c1ccccc1Cl, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.