Using CNC(=O)c1ccccc1Nc1nc(Nc2ccc3c(c2)CCN(C(=O)C(F)(F)F)CC3)ncc1Cl to produce CNC(=O)c1ccccc1Nc1nc(Nc2ccc3c(c2)CCNCC3)ncc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.