Using CC1(C(F)(F)F)CO1, O=C(O)CN1CCNCCN(CC(=O)O)CCN(CC(=O)O)CC1 to produce CC(O)(CN1CCN(CC(=O)O)CCN(CC(=O)O)CCN(CC(=O)O)CC1)C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.