Using COc1ccc(CN2Cc3ccc(C(=O)N4CCOCC4)cc3C2)c(OC)c1 to produce COc1ccc(CN2Cc3ccc(CN4CCOCC4)cc3C2)c(OC)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.