Using CCOC(=O)C1=C(c2ccccc2)c2ccc(OC)cc2C1(O)c1ccccc1 to produce COc1ccc2c(c1)C(O)(c1ccccc1)C(C(=O)O)=C2c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.