Using Nc1cccc(Cl)c1, Clc1cc(SCc2ccccc2)n2nccc2n1 to produce Clc1cccc(Nc2cc(SCc3ccccc3)n3nccc3n2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.