Using c1cn[nH]c1, O=C(Cl)c1cn(-c2cccc(-c3ccccc3)c2)cn1 to produce O=C(c1cn(-c2cccc(-c3ccccc3)c2)cn1)n1cccn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.