Using CCCOc1ccc2c(c1)C(c1ccc(OC)cc1/C=C/C(=O)OC)C(C(=O)[O-])C2c1ccc2c(c1)OCO2 to produce CCCOc1ccc2c(c1)C(c1ccc(OC)cc1/C=C/C(=O)O)C(C(=O)O)C2c1ccc2c(c1)OCO2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.