Using CS(=O)(=O)Cl, O=C(NCC1CN(Cc2ccc(Cl)c(Cl)c2)CCO1)NC1CCNCC1 to produce CS(=O)(=O)N1CCC(NC(=O)NCC2CN(Cc3ccc(Cl)c(Cl)c3)CCO2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.