Using COc1ccc(-c2oc3ccccc3c2C(=O)c2ccc(C)cc2)cc1 to produce Cc1ccc(C(=O)c2c(-c3ccc(O)cc3)oc3ccccc23)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.