Using CCC(O)(/C=C/c1ccc(C(CC)(CC)c2ccc(-c3ccccc3CC(=O)OC)cc2)cc1C)CC to produce CCC(O)(/C=C/c1ccc(C(CC)(CC)c2ccc(-c3ccccc3CC(=O)O)cc2)cc1C)CC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.