Using COCCBr, COc1cc2c(Oc3ccc(Cl)cc3F)ncnc2cc1O to produce COCCOc1cc2ncnc(Oc3ccc(Cl)cc3F)c2cc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.