Using CC(C)(C)OC(=O)N1CCCC(C(=O)N2CCN(c3cccc(C(F)(F)F)c3)CC2)C1 to produce O=C(C1CCCNC1)N1CCN(c2cccc(C(F)(F)F)c2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.