Using C[C@H](c1cccc2ccccc12)N(CC1CN(C(=O)C(F)(F)F)CCC1c1ccccc1F)C(=O)OC(C)(C)C to produce C[C@H](c1cccc2ccccc12)N(CC1CNCCC1c1ccccc1F)C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.