Using COc1ccc(-c2cc(=O)c3c(O)cc(O)cc3o2)cc1O, C=CCBr to produce C=CCOc1cc(OCC=C)c2c(=O)cc(-c3ccc(OC)c(OCC=C)c3)oc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.