Using COc1ccccc1CC(=O)N1CC2C(=O)CCC(O)(c3ccccc3OC)C2C1 to produce COc1ccccc1CC(=O)N1CC2C(O)CCC(O)(c3ccccc3OC)C2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.