Using CC(C)c1cc(Cl)nnc1Cl, OCCCc1cc(Br)c(O)c(Br)c1 to produce CC(C)c1cc(Oc2c(Br)cc(CCCO)cc2Br)nnc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.