Using CC(C)(C)OC(=O)N1CCCC(CNC(=O)c2cnc(-c3cccc(F)c3)nc2)C1 to produce O=C(NCC1CCCNC1)c1cnc(-c2cccc(F)c2)nc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.