Using CC(=O)OCCc1cc(Br)c(Oc2ccc(=O)n(C(C)C)n2)c(Br)c1 to produce CC(C)n1nc(Oc2c(Br)cc(CCO)cc2Br)ccc1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.