Using CCC(C)C(=O)OC1CC(C)C=C2C=CC(C)C(CCC(O)CC(O)CCO)C21 to produce CCC(C)C(=O)OC1CC(C)C=C2C=CC(C)C(CCC3CC(O)CCO3)C21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.