Using N=C(C=Cc1ccc(-c2ccc3[nH]ccc3c2)cc1)Nc1ccc(Cl)cc1, CI to produce Cn1ccc2cc(-c3ccc(C=CC(=N)Nc4ccc(Cl)cc4)cc3)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.