Using CC(C)(C)OC(=O)N[C@@H](COc1c(N)cccc1C(F)(F)F)C(=O)O to produce CC(C)(C)OC(=O)N[C@H]1COc2c(cccc2C(F)(F)F)NC1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.