Using CC(C)(C)OC(=O)N(CCCCNC(=O)C(F)(F)F)Cc1cccc2ncc(C(=O)C(Cl)(Cl)Cl)n12 to produce O=C1c2cnc3cccc(n23)CN1CCCCNC(=O)C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.