Using CCN(C(=O)CCNCC(F)F)c1cn(-c2cccnc2)nc1Cl, O=C(O)C1CC1(F)F to produce CCN(C(=O)CCN(CC(F)F)C(=O)C1CC1(F)F)c1cn(-c2cccnc2)nc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.