Using O=C([O-])[O-], C=C(C)CCc1c(OC)cc(/C=C/c2ccccc2)c(C(=O)OC)c1O to produce C=C(C)CCc1c(OC)cc(/C=C/c2ccccc2)c(C(=O)OC)c1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.