Using O=C1C(C(F)(F)F)=C2c3cc(Cl)c4[nH]nnc4c3CC23CCC1C3 to produce O=C1C(C(F)(F)F)=C2c3ccc4[nH]nnc4c3CC23CCC1C3, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.