Using CC[C@H](NC(=O)OC(C)(C)C)C(=O)N1c2ccc(OCc3ccccc3)cc2C[C@H]1C(=O)O, NCC(F)(F)F to produce CC[C@H](NC(=O)OC(C)(C)C)C(=O)N1c2ccc(OCc3ccccc3)cc2CC1C(=O)NCC(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.