Using CC(C)(C)OC(=O)N[C@@H]1CC[C@@H](c2cccc(F)c2F)CNC1=NCC(O)CC(F)(F)F to produce CC(C)(C)OC(=O)N[C@@H]1CC[C@@H](c2cccc(F)c2F)Cn2c(CC(F)(F)F)cnc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.