Using O=Cc1ccccc1, NC1CN(C(c2ccc(Cl)cc2)c2ccc(Cl)cc2)C1 to produce Clc1ccc(C(c2ccc(Cl)cc2)N2CC(NCc3ccccc3)C2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.