Using CC(C)(C)OC(=O)NCCNC(=O)c1nnn(-c2ccc(C(=O)NCC(F)(F)F)cc2)c1CCCCCF to produce NCCNC(=O)c1nnn(-c2ccc(C(=O)NCC(F)(F)F)cc2)c1CCCCCF, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.