Using O=C([O-])[O-], CC(C)(C)OC(=O)N1CCN(C(=O)C(c2ccc(O)c(OC(F)(F)F)c2)C2(O)CCCCC2)CC1 to produce COc1ccc(C(C(=O)N2CCN(C(=O)OC(C)(C)C)CC2)C2(O)CCCCC2)cc1OC(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.