Using O=C=NCCCl, Cc1[nH]nc(Oc2c(Cl)cc(C(F)(F)F)cc2Cl)c1Cl to produce Cc1c(Cl)c(Oc2c(Cl)cc(C(F)(F)F)cc2Cl)nn1C(=O)NCCCl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.