Using BrC(Br)(Br)Br, CCCCCCCCCCCCNC(=O)c1cc(Br)c(OCCO)c(-c2cccc(OC)c2)c1 to produce CCCCCCCCCCCCNC(=O)c1cc(Br)c(OCCBr)c(-c2cccc(OC)c2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.