Using COc1cc(OC)c2c(=O)[nH]c(-c3ccc(N4CCC(N)C4)cc3)nc2c1, O=CC1CC1 to produce COc1cc(OC)c2c(=O)[nH]c(-c3ccc(N4CCC(NCC5CC5)C4)cc3)nc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.