Using Nc1ccc(C2CCC(N3CC(N)C3)CC2)cc1, O=C(O)CNC(=O)c1cccc(C(F)(F)F)c1 to produce Nc1ccc(C2CCC(N3CC(NC(=O)CNC(=O)c4cccc(C(F)(F)F)c4)C3)CC2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.