Using COc1ccc(Cl)c(Nc2ncnc3cc(OC)cc(O)c23)c1, OCCCN1CCOCC1 to produce COc1ccc(Cl)c(Nc2ncnc3cc(OC)cc(OCCCN4CCOCC4)c23)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.