Using COC(=O)C1C(=O)c2cc(OCc3ccccc3)ccc2C1c1ccc2c(c1)OCO2 to produce COC(=O)C1=C(c2ccc3c(c2)OCO3)c2ccc(OCc3ccccc3)cc2C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.