Using COc1cc(C=CC(=O)c2ccc(I)cc2O)cc(OC)c1OCc1ccccc1, [OH-] to produce COc1cc(-c2oc3cc(I)ccc3c(=O)c2O)cc(OC)c1OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.