Using COc1ccc2c(CBr)c(-c3cnc(OC)nc3OC)c(=O)oc2c1 to produce O=c1oc2cc(O)ccc2c2c1-c1cnc(O)nc1OC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.