Using O=Cc1ccc(Cl)c(Cl)c1, NCCNc1nc(Cl)nc2c1ncn2C1CCCC1 to produce Clc1nc(NCCNCc2ccc(Cl)c(Cl)c2)c2ncn(C3CCCC3)c2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.