Using O=C(Nc1cc2[nH]nc(OCC(F)F)c2cn1)N[C@H]1CNC[C@@H]1c1ccccc1, O=C(O)CO to produce O=C(Nc1cc2[nH]nc(OCC(F)F)c2cn1)N[C@H]1CN(C(=O)CO)C[C@@H]1c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.